35 U.S.C. § 4748

“Existing appropriations and funds available for the performance of functions, programs, and activities terminated pursuant to this subtitle shall remain available, for the duration of their period of availability, for necessary expenses in connection with the termination and resolution of such functions, programs, and activities, subject to the submission of a plan to the Committees on Appropriations of the House and Senate in accordance with the procedures set forth in section 605 of the Departments of Commerce, Justice, and State, the Judiciary, and Related Agencies Appropriations Act, 1999, as contained in Public Law 105–277 [112 Stat. 2681–111].