<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by DFIN XBRL Schema Document - http://www.dfinsolutions.com/ - on 23-06-2026 11:43:22 AM -->
<!-- Copyright(c) 2026 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<schema targetNamespace="http://www.blackrock.com/20260622" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:iuset="http://www.blackrock.com/20260622" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:srt-types="http://fasb.org/srt-types/2025" xmlns:deprecated="http://www.xbrl.org/2009/role/deprecated" xmlns:dtr="http://www.xbrl.org/2009/dtr" xmlns:oef="http://xbrl.sec.gov/oef/2025" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:us-gaap="http://fasb.org/us-gaap/2025" xmlns:oef-pre="http://xbrl.sec.gov/oef-pre/2025" xmlns:oef-lab="http://xbrl.sec.gov/oef-lab/2025" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:country="http://xbrl.sec.gov/country/2025" xmlns:us-roles="http://fasb.org/us-roles/2025" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:us-types="http://fasb.org/us-types/2025" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:oef-def="http://xbrl.sec.gov/oef-def/2025" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:srt="http://fasb.org/srt/2025" xmlns:oef-sr="http://xbrl.sec.gov/oef-sr/2025" xmlns:srt-roles="http://fasb.org/srt-roles/2025" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:stpr="http://xbrl.sec.gov/stpr/2025" elementFormDefault="qualified">
	<import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
	<import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
	<import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/>
	<import namespace="http://fasb.org/us-types/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-types-2025.xsd"/>
	<import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>   
	<import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd"/>
	<import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/>
	<import namespace="http://fasb.org/srt-types/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-types-2025.xsd"/>
	<import namespace="http://xbrl.sec.gov/oef-sr/2025" schemaLocation="https://xbrl.sec.gov/oef/2025/oef-sr-2025.xsd"/>
	<import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd"/>
	<import namespace="http://fasb.org/us-roles/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd"/>
	<import namespace="http://fasb.org/srt-roles/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-roles-2025.xsd"/>
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				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReport" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReport"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportHoldingsDetails"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportLineGraphDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportLineGraphDetails"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportAverageAnnualReturnDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportAverageAnnualReturnDetails"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly"/>
				<link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd#eedm"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#LargestHoldingOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#Other1CategoryOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#AdditionalIndexOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#BroadBasedIndexOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/Other2CategoryOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#Other2CategoryOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/SalesLoadOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SalesLoadOnly"/>
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					<link:loc xlink:type="locator" xlink:href="#iuset_MunicipalDebtObligationsMember" xlink:label="MunicipalDebtObligationsMember"/>
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					<!--IndustrySectorDomain Only presentation and label linkbases-->	
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					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="SwapsNetCumulativeAppreciationMember" order="8.0"/>
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					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="ShortTermInvestmentsMember" order="9.0"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialPaperMember" xlink:label="CommercialPaperMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="CommercialPaperMember" order="10.0"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MoneyMarketFundsMember" xlink:label="MoneyMarketFundsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="MoneyMarketFundsMember" order="11.0"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FutureMember" xlink:label="FutureMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="FutureMember" order="12.0"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashMember" xlink:label="CashMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="CashMember" order="13.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_USTreasuryObligationsMember" xlink:label="USTreasuryObligationsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="USTreasuryObligationsMember" order="14.0"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly">               
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_BroadBasedIndexDomain" xlink:label="BroadBasedIndexDomain"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly">              
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AdditionalIndexDomain" xlink:label="AdditionalIndexDomain"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/MaturityOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_MaturityDomain" xlink:label="MaturityDomain"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/IndustrySectorOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_IndustrySectorDomain" xlink:label="IndustrySectorDomain"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_EnergyFuturesMember" xlink:label="EnergyFuturesMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="EnergyFuturesMember" order="1.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_AgricultureFuturesMember" xlink:label="AgricultureFuturesMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="AgricultureFuturesMember" order="2.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_IndustrialMetalsFuturesMember" xlink:label="IndustrialMetalsFuturesMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="IndustrialMetalsFuturesMember" order="3.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_LivestockFuturesMember" xlink:label="LivestockFuturesMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="LivestockFuturesMember" order="4.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_GoldFuturesMember" xlink:label="GoldFuturesMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="GoldFuturesMember" order="5.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_PreciousMetalsFuturesMember" xlink:label="PreciousMetalsFuturesMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IndustrySectorDomain" xlink:to="PreciousMetalsFuturesMember" order="6.0"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/CreditQualityOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_CreditQualityDomain" xlink:label="CreditQualityDomain"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_NotRatedMember" xlink:label="NotRatedMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CreditQualityDomain" xlink:to="NotRatedMember" order="1.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_BaMember" xlink:label="BaMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CreditQualityDomain" xlink:to="BaMember" order="2.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_BaaMember" xlink:label="BaaMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CreditQualityDomain" xlink:to="BaaMember" order="3.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_AMember" xlink:label="AMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CreditQualityDomain" xlink:to="AMember" order="4.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_AaMember" xlink:label="AaMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CreditQualityDomain" xlink:to="AaMember" order="5.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_BMember" xlink:label="BMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CreditQualityDomain" xlink:to="BMember" order="6.0"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_CaaMember" xlink:label="CaaMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CreditQualityDomain" xlink:to="CaaMember" order="7.0"/>
				</link:definitionLink>
				<!--GeographicRegionOnly use only for STPR-->
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/GeographicRegionOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_GeographicRegionDomain" xlink:label="GeographicRegionDomain"/>
				</link:definitionLink>
				<link:labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">               
					<link:loc xlink:type="locator" xlink:href="#iuset_FloatingRateLoanInterestsMember" xlink:label="FloatingRateLoanInterestsMember"/>
					<link:label xlink:type="resource" xlink:label="label_FloatingRateLoanInterestsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Floating Rate Loan Interests [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FloatingRateLoanInterestsMember" xlink:to="label_FloatingRateLoanInterestsMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_MunicipalDebtObligationsMember" xlink:label="MunicipalDebtObligationsMember"/>
					<link:label xlink:type="resource" xlink:label="label_MunicipalDebtObligationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Municipal Debt Obligations [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MunicipalDebtObligationsMember" xlink:to="label_MunicipalDebtObligationsMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_InvestmentCompaniesMember" xlink:label="InvestmentCompaniesMember"/>
					<link:label xlink:type="resource" xlink:label="label_InvestmentCompaniesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Investment Companies [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentCompaniesMember" xlink:to="label_InvestmentCompaniesMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_ForeignGovernmentObligationsMember" xlink:label="ForeignGovernmentObligationsMember"/>
					<link:label xlink:type="resource" xlink:label="label_ForeignGovernmentObligationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Foreign Government Obligations [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ForeignGovernmentObligationsMember" xlink:to="label_ForeignGovernmentObligationsMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_CorporateBondsAndNotesMember" xlink:label="CorporateBondsAndNotesMember"/>
					<link:label xlink:type="resource" xlink:label="label_CorporateBondsAndNotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Corporate Bonds And Notes [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CorporateBondsAndNotesMember" xlink:to="label_CorporateBondsAndNotesMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_C000113876Member" xlink:label="C000113876Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000113876Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000113876 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000113876Member" xlink:to="label_C000113876Member"/>
										<link:label xlink:type="resource" xlink:label="label_C000113876Member_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xml:lang="en-US">Comp</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000113876Member" xlink:to="label_C000113876Member_2"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetBackedSecuritiesMember" xlink:label="AssetBackedSecuritiesMember"/>
					<link:label xlink:type="resource" xlink:label="label_AssetBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Asset-Backed Securities [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetBackedSecuritiesMember" xlink:to="label_AssetBackedSecuritiesMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:label="USGovernmentCorporationsAndAgenciesSecuritiesMember"/>
					<link:label xlink:type="resource" xlink:label="label_USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">US Government Corporations and Agencies Securities [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:to="label_USGovernmentCorporationsAndAgenciesSecuritiesMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CollateralizedMortgageObligationsMember" xlink:label="CollateralizedMortgageObligationsMember"/>
					<link:label xlink:type="resource" xlink:label="label_CollateralizedMortgageObligationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Collateralized Mortgage Obligations [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollateralizedMortgageObligationsMember" xlink:to="label_CollateralizedMortgageObligationsMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepurchaseAgreementsMember" xlink:label="RepurchaseAgreementsMember"/>
					<link:label xlink:type="resource" xlink:label="label_RepurchaseAgreementsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Repurchase Agreements [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepurchaseAgreementsMember" xlink:to="label_RepurchaseAgreementsMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_C000125661Member" xlink:label="C000125661Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000125661Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000125661 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000125661Member" xlink:to="label_C000125661Member"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_NotRatedMember" xlink:label="NotRatedMember"/>
					<link:label xlink:type="resource" xlink:label="label_NotRatedMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Not Rated [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotRatedMember" xlink:to="label_NotRatedMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_BaMember" xlink:label="BaMember"/>
					<link:label xlink:type="resource" xlink:label="label_BaMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Ba [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BaMember" xlink:to="label_BaMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_BaaMember" xlink:label="BaaMember"/>
					<link:label xlink:type="resource" xlink:label="label_BaaMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Baa [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BaaMember" xlink:to="label_BaaMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_AMember" xlink:label="AMember"/>
					<link:label xlink:type="resource" xlink:label="label_AMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">A [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AMember" xlink:to="label_AMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_AaMember" xlink:label="AaMember"/>
					<link:label xlink:type="resource" xlink:label="label_AaMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Aa [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AaMember" xlink:to="label_AaMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_OtherAssetsLessLiabilitiesMember" xlink:label="OtherAssetsLessLiabilitiesMember"/>
					<link:label xlink:type="resource" xlink:label="label_OtherAssetsLessLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Other assets less liabilities [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsLessLiabilitiesMember" xlink:to="label_OtherAssetsLessLiabilitiesMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_SwapsNetCumulativeAppreciationMember" xlink:label="SwapsNetCumulativeAppreciationMember"/>
					<link:label xlink:type="resource" xlink:label="label_SwapsNetCumulativeAppreciationMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Swaps net cumulative appreciation [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SwapsNetCumulativeAppreciationMember" xlink:to="label_SwapsNetCumulativeAppreciationMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_C000132817Member" xlink:label="C000132817Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000132817Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000132817 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000132817Member" xlink:to="label_C000132817Member"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermInvestmentsMember" xlink:label="ShortTermInvestmentsMember"/>
					<link:label xlink:type="resource" xlink:label="label_ShortTermInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Short-Term Investments [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermInvestmentsMember" xlink:to="label_ShortTermInvestmentsMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MoodysAaaRatingMember" xlink:label="MoodysAaaRatingMember"/>
					<link:label xlink:type="resource" xlink:label="label_MoodysAaaRatingMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Moody&apos;s, Aaa Rating [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MoodysAaaRatingMember" xlink:to="label_MoodysAaaRatingMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MoodysCaRatingMember" xlink:label="MoodysCaRatingMember"/>
					<link:label xlink:type="resource" xlink:label="label_MoodysCaRatingMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Moody&apos;s, Ca Rating [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MoodysCaRatingMember" xlink:to="label_MoodysCaRatingMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_C000132818Member" xlink:label="C000132818Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000132818Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000132818 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000132818Member" xlink:to="label_C000132818Member"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_BMember" xlink:label="BMember"/>
					<link:label xlink:type="resource" xlink:label="label_BMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">B [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BMember" xlink:to="label_BMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_CaaMember" xlink:label="CaaMember"/>
					<link:label xlink:type="resource" xlink:label="label_CaaMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Caa [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CaaMember" xlink:to="label_CaaMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_C000137261Member" xlink:label="C000137261Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000137261Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000137261 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000137261Member" xlink:to="label_C000137261Member"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialPaperMember" xlink:label="CommercialPaperMember"/>
					<link:label xlink:type="resource" xlink:label="label_CommercialPaperMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Commercial Paper [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommercialPaperMember" xlink:to="label_CommercialPaperMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CertificatesOfDepositMember" xlink:label="CertificatesOfDepositMember"/>
					<link:label xlink:type="resource" xlink:label="label_CertificatesOfDepositMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Certificates of Deposit [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CertificatesOfDepositMember" xlink:to="label_CertificatesOfDepositMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MoneyMarketFundsMember" xlink:label="MoneyMarketFundsMember"/>
					<link:label xlink:type="resource" xlink:label="label_MoneyMarketFundsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Money Market Funds [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MoneyMarketFundsMember" xlink:to="label_MoneyMarketFundsMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FutureMember" xlink:label="FutureMember"/>
					<link:label xlink:type="resource" xlink:label="label_FutureMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Future [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMember" xlink:to="label_FutureMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashMember" xlink:label="CashMember"/>
					<link:label xlink:type="resource" xlink:label="label_CashMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Cash [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashMember" xlink:to="label_CashMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_C000139416Member" xlink:label="C000139416Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000139416Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000139416 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000139416Member" xlink:to="label_C000139416Member"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_USTreasuryObligationsMember" xlink:label="USTreasuryObligationsMember"/>
					<link:label xlink:type="resource" xlink:label="label_USTreasuryObligationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">U S Treasury Obligations [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USTreasuryObligationsMember" xlink:to="label_USTreasuryObligationsMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_EnergyFuturesMember" xlink:label="EnergyFuturesMember"/>
					<link:label xlink:type="resource" xlink:label="label_EnergyFuturesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Energy Futures [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnergyFuturesMember" xlink:to="label_EnergyFuturesMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_AgricultureFuturesMember" xlink:label="AgricultureFuturesMember"/>
					<link:label xlink:type="resource" xlink:label="label_AgricultureFuturesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Agriculture Futures [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AgricultureFuturesMember" xlink:to="label_AgricultureFuturesMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_IndustrialMetalsFuturesMember" xlink:label="IndustrialMetalsFuturesMember"/>
					<link:label xlink:type="resource" xlink:label="label_IndustrialMetalsFuturesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Industrial Metals Futures [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndustrialMetalsFuturesMember" xlink:to="label_IndustrialMetalsFuturesMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_LivestockFuturesMember" xlink:label="LivestockFuturesMember"/>
					<link:label xlink:type="resource" xlink:label="label_LivestockFuturesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Livestock Futures [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LivestockFuturesMember" xlink:to="label_LivestockFuturesMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_GoldFuturesMember" xlink:label="GoldFuturesMember"/>
					<link:label xlink:type="resource" xlink:label="label_GoldFuturesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Gold Futures [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoldFuturesMember" xlink:to="label_GoldFuturesMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_PreciousMetalsFuturesMember" xlink:label="PreciousMetalsFuturesMember"/>
					<link:label xlink:type="resource" xlink:label="label_PreciousMetalsFuturesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Precious Metals Futures [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreciousMetalsFuturesMember" xlink:to="label_PreciousMetalsFuturesMember"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_C000189608Member" xlink:label="C000189608Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000189608Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000189608 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000189608Member" xlink:to="label_C000189608Member"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_C000198581Member" xlink:label="C000198581Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000198581Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000198581 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000198581Member" xlink:to="label_C000198581Member"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_C000236575Member" xlink:label="C000236575Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000236575Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000236575 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000236575Member" xlink:to="label_C000236575Member"/>
					<link:loc xlink:type="locator" xlink:href="#iuset_C000242839Member" xlink:label="C000242839Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000242839Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000242839 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000242839Member" xlink:to="label_C000242839Member"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentTypeAxis" xlink:label="InvestmentTypeAxis"/>
					<link:label xlink:type="resource" xlink:label="label_InvestmentTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Investment Type [Axis]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentTypeAxis" xlink:to="label_InvestmentTypeAxis" priority="1"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNet" xlink:label="AssetsNet"/>
					<link:label xlink:type="resource" xlink:label="label_AssetsNet" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Net Assets</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsNet" xlink:to="label_AssetsNet" priority="1"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentCompanyPortfolioTurnover" xlink:label="InvestmentCompanyPortfolioTurnover"/>
					<link:label xlink:type="resource" xlink:label="label_InvestmentCompanyPortfolioTurnover" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Investment Company Portfolio Turnover</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentCompanyPortfolioTurnover" xlink:to="label_InvestmentCompanyPortfolioTurnover" priority="1"/>                
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_NoTradingSymbolFlag" xlink:label="dei_NoTradingSymbolFlag"/>
					<link:label xlink:type="resource" xlink:label="label_NoTradingSymbolFlag" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">No Trading Symbol Flag</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_NoTradingSymbolFlag" xlink:to="label_NoTradingSymbolFlag" priority="1"/>		
				</link:labelLink>
			</link:linkbase>
		</appinfo>
	</annotation>   
	<element name="FloatingRateLoanInterestsMember" id="iuset_FloatingRateLoanInterestsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="MunicipalDebtObligationsMember" id="iuset_MunicipalDebtObligationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="InvestmentCompaniesMember" id="iuset_InvestmentCompaniesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="ForeignGovernmentObligationsMember" id="iuset_ForeignGovernmentObligationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="CorporateBondsAndNotesMember" id="iuset_CorporateBondsAndNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000113876Member" id="iuset_C000113876Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000125661Member" id="iuset_C000125661Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="NotRatedMember" id="iuset_NotRatedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="BaMember" id="iuset_BaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="BaaMember" id="iuset_BaaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="AMember" id="iuset_AMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="AaMember" id="iuset_AaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="OtherAssetsLessLiabilitiesMember" id="iuset_OtherAssetsLessLiabilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="SwapsNetCumulativeAppreciationMember" id="iuset_SwapsNetCumulativeAppreciationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000132817Member" id="iuset_C000132817Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000132818Member" id="iuset_C000132818Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="BMember" id="iuset_BMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="CaaMember" id="iuset_CaaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000137261Member" id="iuset_C000137261Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000139416Member" id="iuset_C000139416Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="USTreasuryObligationsMember" id="iuset_USTreasuryObligationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="EnergyFuturesMember" id="iuset_EnergyFuturesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="AgricultureFuturesMember" id="iuset_AgricultureFuturesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="IndustrialMetalsFuturesMember" id="iuset_IndustrialMetalsFuturesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="LivestockFuturesMember" id="iuset_LivestockFuturesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="GoldFuturesMember" id="iuset_GoldFuturesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="PreciousMetalsFuturesMember" id="iuset_PreciousMetalsFuturesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000189608Member" id="iuset_C000189608Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000198581Member" id="iuset_C000198581Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000236575Member" id="iuset_C000236575Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000242839Member" id="iuset_C000242839Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
</schema>
