and Meg Donovan Foreign Relations Authorization Act, Fiscal Years 2000 and 2001 ( 22 U.S.C. 2452b ), up to $25,000,000 of the amounts made available under this heading may be obligated and expended for United States participation in international fairs and expositions abroad, including for construction and operation of a United States pavilion at Expo 2025. (G) Funds appropriated under this heading and under the heading Emergencies in the Diplomatic and Consular Service may be made available for support for United States nationals detained overseas following the return of such nationals, and their family members, if the Secretary of State has determined that there is credible information that their detention was wrongful, consistent with section 302(a) of the Robert Levinson Hostage Recovery and Hostage-Taking Accountability Act (subtitle A of title III of division FF of Public Law 116–260 ), including for— (i) medical, mental health, and other appropriate support for such wrongfully detained United States nationals