The Americas Grid Policy Management Authority (TAGPMA) today voted to accredit the CILogon Silver CA Policy under the Member Integrated Credential Services (MICS) Profile, allowing the CA to issue certificates valid for up to 13 months. This accreditation is a step forward for certificates from https://cilogon.org being accepted by members of the International Grid Trust Federation (IGTF) including TeraGrid, Open Science Grid (OSG), European Grid Infrastructure (EGI), and Worldwide LHC Computing Grid (WLCG). Following an operational review by TAGPMA, the CILogon Silver CA will achieve "accredited" status in the IGTF Trust Anchor Distribution. The CILogon Silver CA relies on campus authentication that satisfies the InCommon Silver Identity Assurance Profile, so it will not be fully operational until the first InCommon campuses are accredited at the Silver level under the InCommon Identity Assurance program. To serve researchers from campuses that are not (yet) at the InCommon Silver level, CILogon also operates Basic and OpenID CAs at https://cilogon.org.