; 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 and/or subsistence allowances to employees where Voting Rights Act activities require an employee to remain overnight at his or her post of duty, $148,668,000: Provided , That of the total amount made available under this heading, $14,000,000 shall remain available until expended, for the operation and strengthening of the security of OPM IT systems and the modernization, migration, and testing of such systems: 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 and the Administrator of the United States Digital Service, 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, part 7; (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