6 USC 453 - Use of appropriated funds

(a) Disposal of property 

(1) Strict compliance 
If specifically authorized to dispose of real property in this chapter or any other Act, the Secretary shall exercise this authority in strict compliance with subchapter IV of chapter 5 of title 40.
(2) Deposit of proceeds 
The Secretary shall deposit the proceeds of any exercise of property disposal authority into the miscellaneous receipts of the Treasury in accordance with section 3302 (b) of title 31.
(b) Gifts 
Except as authorized by section 2601 of title 10 and by section 93 of title 14, gifts or donations of services or property of or for the Department may not be accepted, used, or disposed of unless specifically permitted in advance in an appropriations Act and only under the conditions and for the purposes specified in such appropriations Act.
(c) Budget request 
Under section 1105 of title 31, the President shall submit to Congress a detailed budget request for the Department for fiscal year 2004, and for each subsequent fiscal year.