None of the funds appropriated under the heading Embassy Security, Construction, and Maintenance in this Act and prior Acts making appropriations for the Department of State, foreign operations, and related programs, made available through Federal agency Capital Security Cost Sharing contributions and reimbursements, or generated from the proceeds of real property sales, other than from real property sales located in London, United Kingdom, may be made available for site acquisition and mitigation, planning, design, or construction of the New London Embassy: Provided , That the reporting requirement contained in section 7004(f)(2) of the Department of State, Foreign Operations, and Related Programs Appropriations Act, 2012 (division I of Public Law 112–74 ) shall remain in effect during fiscal year 2018. (2) Within 45 days of enactment of this Act and every 4 months thereafter until September 30, 2019, the Secretary of State shall submit to the Committees on Appropriations a report on the new Mexico City Embassy and Beirut Embassy projects: Provided , That such report shall include, for each of the projects— (A) a detailed breakout of the project factors that formed the basis of the initial cost estimate used to justify such project to the Committees on Appropriations, as described under the heading Embassy Security Construction and Maintenance in the report accompanying this Act