1. Short title This Act may be cited as the United States Secret Service Mission Improvement and Realignment Act of 2023 . 2. Functions transferred (a) In general In accordance with this Act, there shall be transferred to the Secretary of the Treasury the functions, personnel, assets, and obligations of the United States Secret Service, including the functions of the Secretary of Homeland Security relating thereto. (b) Distinct entity The United States Secret Service shall be maintained as a distinct entity within the Department of the Treasury. 3. Transitional authorities (a) Provision of assistance by officials Until the transfer of the United States Secret Service to the Department of the Treasury, any official having authority over or functions relating to the United States Secret Service immediately before the date of enactment of this Act shall provide to the Secretary of the Treasury such assistance, including the use of personnel and assets, as the Secretary of the Treasury may request in preparing for the transfer and integration of the United States Secret Service into the Department of the Treasury. (b) Services and personnel During the period beginning on the date of enactment of this Act and ending on the effective date of this Act, upon the request of the Secretary of the Treasury, the head of any executive agency may, on a reimbursable basis, provide services or detail personnel to assist with the transition. (c) Transfer of personnel, assets, obligations, and functions Upon the transfer of the United States Secret Service to the Department of the Treasury— (1) the personnel, assets, and obligations held by or available in connection with the United States Secret Service shall be transferred to the Secretary of the Treasury for appropriate allocation, subject to the approval of the Director of the Office of Management and Budget and in accordance with section 1531(a)(2) of title 31, United States Code