The Community Investment and Prosperity Act seeks to expand the capacity of financial institutions to support community development. It achieves this by increasing the permissible aggregate amount that national banking associations and State member banks can invest in projects designed to promote the public welfare. Specifically, the bill amends the Revised Statutes and the Federal Reserve Act to raise the investment limit from 15 percent to 20 percent of a bank's capital and surplus. This adjustment empowers the Comptroller of the Currency and the Board of Governors of the Federal Reserve System to allow banks to allocate a larger portion of their resources towards initiatives benefiting communities.