12 CFR § 201.1 - Authority, purpose and scope.
(a) Authority. This part is issued under the authority of sections 10A, 10B, 11(i), 11(j), 13, 13A, 14(d), and 19 of the Federal Reserve Act (12 U.S.C. 248(i)-(j), 343 et seq., 347a, 347b, 347c, 348 et seq., 357, 374, 374a, and 461).
(b) Purpose and scope. This part establishes rules under which a Federal Reserve Bank may extend credit to depository institutions and others. Except as otherwise provided, this part applies to United States branches and agencies of foreign banks that are subject to reserve requirements under Regulation D (12 CFR part 204) in the same manner and to the same extent as this part applies to depository institutions. The Federal Reserve System extends credit with due regard to the basic objectives of monetary policy and the maintenance of a sound and orderly financial system.