; full medical coverage for dependent members of immediate families of employees stationed overseas and employees temporarily posted overseas; travel and transportation of employees of the International Trade Administration between two points abroad, without regard to section 40118 of title 49, United States Code; employment of citizens of the United States and aliens by contract for services; rental of space abroad for periods not exceeding 10 years, and expenses of alteration, repair, or improvement; purchase or construction of temporary demountable exhibition structures for use 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 $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, $495,000,000, 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