Peru’s major air carrier, Aero Continente, already prohibited from flying to the U.S. because of safety violations, is now off-limits to Americans wherever it flies because its owner was placed on the U.S. government’s list of drug kingpins around the world. The 1999 Drug Kingpin Act, enforced by the U.S. Treasury Department, allows the government to freeze all assets of people on the list, and in this case prohibits Americans from flying Aero Continente and forbids U.S. companies from selling it spare parts. As a practical matter, it is unlikely that the U.S. government would find out about any American flying on the airline between South American destinations.