; and (2) By striking requirements. and by inserting requirements: Provided, That the sale of Plum Island property and assets complies with the requirements for asset disposition described in chapter 5 of subtitle I of title 40, United States Code. V General provisions (including transfers of funds) 501. No part of any appropriation contained in this Act shall remain available for obligation beyond the current fiscal year unless expressly so provided herein. 502. Subject to the requirements of section 503 of this Act, the unexpended balances of prior appropriations provided for activities in this Act may be transferred to appropriation accounts for such activities established pursuant to this Act, may be merged with funds in the applicable established accounts, and thereafter may be accounted for as one fund for the same time period as originally enacted. 503. (a) None of the funds provided by this Act, provided by previous appropriations Acts to the components in or transferred to the Department of Homeland Security that remain available for obligation or expenditure in fiscal year 2019, or provided from any accounts in the Treasury of the United States derived by the collection of fees available to the components funded by this Act, shall be available for obligation or expenditure through a reprogramming of funds that— (1) creates or eliminates a program, project, or activity, or increases funds for any program, project, or activity for which funds have been denied or restricted by the Congress; (2) contracts out any function or activity presently performed by Federal employees or any new function or activity proposed to be performed by Federal employees in the President's budget proposal for fiscal year 2019 for the Department of Homeland Security; (3) augments funding for existing programs, projects, or activities in excess of $5,000,000 or 10 percent, whichever is less; (4) reduces funding for any program, project, or activity, or numbers of personnel, by 10 percent or more