The
United States soccer league system, sometimes called the
American soccer pyramid, is a series of professional and amateur
association football leagues based, in whole or in part, in the
United States. For practical and historical reasons, some teams from
Antigua and Barbuda,
Bermuda,
Canada, and
Puerto Rico (considered a separate country by
FIFA) also compete in these leagues, although they are not eligible for the
Lamar Hunt U.S. Open Cup, which is open only to teams affiliated with U.S. Soccer, and cannot represent the United States in the
CONCACAF Champions League; only USSF-affiliated teams can represent the U.S. in the continental tournament.