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in the applicable established accounts, and thereafter may be accounted for as one fund for the same time period as originally enacted. 503.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 or provided from any accounts derived by the collection of fees available to the components of such Department, shall be available for obligation or expenditure through a reprogramming of appropriated funds or a change in the planned obligation of funds derived from such fees that— (1) creates or eliminates a program, project, or activity