Any funds received by the Capitol Police as reimbursement for law enforcement assistance from any Federal, State, or local government agency (including any agency of the District of Columbia), and from any other source in the case of assistance provided in connection with an activity that was not sponsored by Congress shall be deposited in the United States Treasury for credit to the appropriation for “general expenses” under the heading “United States Capitol Police”, or “security enhancements” under the heading “United States Capitol Police”.

Funds deposited under this subsection may be expended by the Chief of the United States Capitol Police for any authorized purpose, including overtime pay expenditures relating to any law enforcement assistance for which reimbursement described in paragraph (1) is made, and shall remain available until expended.