or by the Secretary of Agriculture under any rural housing program of such Department providing such assistance. (3) Public Housing Capital Fund The Secretary shall credit an amount equal to 10 percent of the amount of such remaining revenues to the Public Housing Capital Fund under section 9(d) of the United States Housing Act of 1937 ( 42 U.S.C. 1437g(d) ). (b) Changes to Housing Trust Fund Not later than the expiration of the 6-month period beginning on the date of the enactment of this Act, the Secretary of Housing and Urban Development shall revise the regulations relating to the Housing Trust Fund established under section 1338 of the Federal Housing Enterprises Financial Safety and Soundness Act of 1992 ( 12 U.S.C. 4568 ) to provide that such section is carried out with the maximum amount of flexibility possible while complying with such section, which shall include revising such regulations— (1) to increase the limitation on amounts from the Fund that are available for use for operating assistance for housing