The Board of Governors of the Federal Reserve System has approved an amendment to Subpart G of the Board's Regulation Y, Appraisal Standards for Federally Related Transactions, which exempts from the Board's appraisal requirements transactions involving the underwriting or dealing of mortgage-backed securities. This amendment permits bank holding company subsidiaries engaged in underwriting and dealing in securities (so-called section 20 subsidiaries) to underwrite and deal in mortgage-backed securities without demonstrating that the loans underlying the securities are supported by appraisals that meet the Board's appraisal requirements.