; medical examinations performed for veterans by private physicians on a fee basis; rental of conference rooms in the District of Columbia and elsewhere; hire of passenger motor vehicles; not to exceed $2,500 for official reception and representation expenses; advances for reimbursements to applicable funds of OPM and the Federal Bureau of Investigation for expenses incurred under Executive Order No. 10422 of January 9, 1953, as amended; and payment of per diem or subsistence allowances to employees where Voting Rights Act activities require an employee to remain overnight at his or her post of duty, $129,341,000: Provided , That of the total amount made available under this heading, $18,000,000 shall remain available until expended for information technology infrastructure modernization and Trust Fund Federal Financial System migration or modernization: Provided further , That the amount made available by the previous proviso may not be obligated until the Director of the Office of Personnel Management submits to the Committees on Appropriations of the Senate and the House of Representatives a plan for expenditure of such amount, prepared in consultation with the Director of the Office of Management and Budget, the Administrator of the United States Digital Service, and the Secretary of Homeland Security, that— (1) identifies the full scope and cost of the IT systems remediation and stabilization project; (2) meets the capital planning and investment control review requirements established by the Office of Management and Budget, including Circular A–11; (3) includes a Major IT Business Case under the requirements established by the Office of Management and Budget Exhibit 300; (4) complies with the acquisition rules, requirements, guidelines, and systems acquisition management practices of the Government