expenses For necessary expenses, including the hire of two passenger motor vehicles, and not to exceed $20,000 for official reception and representation expenses, not more than $12,816,945,000 may be expended, as authorized by section 201(g)(1) of the Social Security Act, from any one or all of the trust funds referred to in such section: Provided , That not less than $2,300,000 shall be for the Social Security Advisory Board: Provided further , That $85,000,000 shall remain available until expended for information technology modernization, including related hardware and software infrastructure and equipment, and for administrative expenses directly associated with information technology modernization: Provided further , That $100,000,000 shall remain available through September 30, 2020, for activities to address the disability hearings backlog within the Office of Hearings Operations: Provided further , That unobligated balances of funds provided under this paragraph at the end of fiscal year 2019 not needed for fiscal year 2019 shall remain available until expended to invest in the Social Security Administration information technology and telecommunications hardware and software infrastructure, including related equipment and non-payroll administrative expenses associated solely with this information technology and telecommunications infrastructure: Provided further , That the Commissioner of Social Security shall notify the Committees on Appropriations of the House of Representatives and the Senate prior to making unobligated balances available under the authority in the previous proviso: Provided further , That reimbursement to the trust funds under this heading for expenditures for official time for employees of the Social Security Administration pursuant to 5 U.S.C. 7131 , and for facilities or support services for labor organizations pursuant to policies, regulations, or procedures referred to in section 7135(b) of such title shall be made by the Secretary of the Treasury, with interest, from amounts in