USA, otherwise referred to as America or the States, is a country located in North America. It is a leading military superpower, with more S-Rank Hunters than any other nation in the world, and is one of the four countries who have managed to clear at least one S-Rank Gate with its own hunters (alongside China, Russia, and France). Naturally, it is also home to two National Level Hunters: Thomas Andre and Christopher Reed.
America differs from other countries in that it has a secret weapon when it comes to hunter recruitment: Norma Selner, a upgrader with the unique ability to enhance a hunter's strength past their natural limits. By using her as a bribery tactic, the American government was able to successfully recruit a large number of S-Ranks from foreign countries, including Hwang Dong-Su, into their fold over the years.