available until expended: Provided , That amounts appropriated in this paragraph are appropriated pursuant to section 1002(b)(3) of the 21st Century Cures Act, are to be derived from amounts transferred under section 1002(b)(2)(A) of such Act, and may be transferred by the Commissioner of Food and Drugs to the appropriation for Department of Health and Human Services Food and Drug Administration Salaries and Expenses solely for the purposes provided in such Act: Provided further , That upon a determination by the Commissioner that funds transferred pursuant to the previous proviso are not necessary for the purposes provided, such amounts may be transferred back to the account: Provided further , That such transfer authority is in addition to any other transfer authority provided by law. Independent agency Farm credit administration Limitation on administrative expenses Not to exceed $74,600,000 (from assessments collected from farm credit institutions, including the Federal Agricultural Mortgage Corporation) shall be obligated during the current fiscal year for administrative expenses as authorized under 12 U.S.C. 2249: Provided , That this limitation shall not apply to expenses associated with receiverships: Provided further , That the agency may exceed this limitation by up to 10 percent with notification to the Committees on Appropriations of both Houses of Congress. VII GENERAL PROVISIONS (INCLUDING RESCISSIONS AND TRANSFERS OF FUNDS) 701. Within the unit limit of cost fixed by law, appropriations and authorizations made for the Department of Agriculture for the current fiscal year under this Act shall be available for the purchase, in addition to those specifically provided for, of not to exceed 71 passenger motor vehicles of which 68 shall be for replacement only, and for the hire of such vehicles: Provided , That notwithstanding this section, the only purchase of new passenger vehicles shall be for those determined by the Secretary to be necessary for transportation safety, to reduce operational costs,