On April 1, 2016, the Federal Reserve Board finalized a rule to include certain U.S. general obligation state and municipal securities in the type of assets that financial institutions may use to satisfy requirements designed to ensure that such institutions have the capacity to meet liquidity needs during a period of financial stress. The final rule allows investment-grade, U.S. general obligation state and municipal securities to be counted as high-quality liquid assets (HQLA) up to certain levels if such securities meet the same liquidity criteria that apply currently to corporate debt securities. Release. Final Rule.