; for the development, modernization, and enhancement of, modifications to, and infrastructure for Department-wide and program-specific information technology systems, and for the continuing operation and maintenance of both Department-wide and program-specific information systems, and for program-related maintenance activities, $300,000,000 (reduced by $5,000,000), to remain available until September 30, 2021, of which $20,000,000 may be used for single family information technology systems of the Federal Housing Administration: Provided , That any amounts transferred to this Fund under this Act shall remain available until expended: Provided further , That any amounts transferred to this Fund from amounts appropriated by previously enacted appropriations Acts may be used for the purposes specified under this Fund, in addition to any other information technology purposes for which such amounts were appropriated: Provided further , That not more than 10 percent of the funds made available under this heading for development, modernization and enhancement may be obligated until the Secretary submits to the House and Senate Committees on Appropriations, for approval, a plan for expenditure that: (A) identifies for each modernization project: (i) the functional and performance capabilities to be delivered and the mission benefits to be realized; (ii) the estimated life-cycle cost; and (iii) key milestones to be met; and (B) demonstrates that each modernization project is: (i) compliant with the Department's enterprise architecture; (ii) being managed in accordance with applicable life-cycle management policies and guidance; (iii) subject to the Department's capital planning and investment control requirements