loan to the enterprise. . 5. Prohibition of loan-level price adjustments based on debt-to-income ratio The Director and the enterprises shall not impose any loan-level pricing adjustment fee that is based on the ratio of the debt of the mortgagor to the income of the mortgagor. 6. GAO study (a) Study The Comptroller General of the United States shall conduct a study of the revisions made by the Federal Housing Finance Agency to the standard single-family pricing framework under the recalibrated single-family pricing framework to— (1) analyze— (A) the methodology, policy considerations, and any other objectives used by the Federal Housing Finance Agency as the basis for those revisions, including the authority cited by the Director under the Federal Housing Enterprises Financial Safety and Soundness Act of 1992 ( 12 U.S.C. 4501 et seq. ) to require those revisions