; not to exceed $294,300 for official representation expenses abroad; purchase of passenger motor vehicles for official use abroad, not to exceed $45,000 per vehicle; obtaining insurance on official motor vehicles; and rental of tie lines, $491,000,000, to remain available until September 30, 2020, of which $11,000,000 is to be derived from fees to be retained and used by the International Trade Administration, notwithstanding section 3302 of title 31, United States Code: Provided , That, of amounts provided under this heading, not less than $16,400,000 shall be for China antidumping and countervailing duty enforcement and compliance activities: Provided further , That the provisions of the first sentence of section 105(f) and all of section 108(c) of the Mutual Educational and Cultural Exchange Act of 1961 ( 22 U.S.C. 2455(f) and 2458(c)) shall apply in carrying out these activities; and that for the purpose of this Act, contributions under the provisions of the Mutual Educational and Cultural Exchange Act of 1961 shall include payment for assessments for services provided as part of these activities. Bureau of Industry and Security Operations and Administration For necessary expenses for export administration and national security activities of the Department of Commerce, including costs associated with the performance of export administration field activities both domestically and abroad; full medical coverage for dependent members of immediate families of employees stationed overseas; employment of citizens of the United States and aliens by contract for services abroad; payment of tort claims, in the manner authorized in the first paragraph of section 2672 of title 28, United States Code, when such claims arise in foreign countries; not to exceed $13,500 for official representation expenses abroad; awards of compensation to informers under the Export Administration Act of 1979, and as authorized by section 1(b) of the Act of June 15, 1917 (40 Stat. 223; 22 U.S.C. 401(b) )