1、Qualification：The qualification for the U.S. Championship Cup is mainly obtained by the winners of the top club tournaments in the countries of North and Central America, and the North and Central American Intercontinental Club League determines the qualification for the tournament on the basis of the records and rankings of the clubs in the countries of North and Central America.
2. Participation size: The U.S. Champions League has as many as 16 or more teams, while the North and Central American Intercontinental Club League has a relatively small number of teams, usually 16 or fewer.
1. The North American Union Cup is the North American Premier League, a soccer tournament located in North America.
2. North American SuperLiga (North American SuperLiga), is a former international soccer tournament in North America. Participating teams include SuperLiga from Mexico and Major League Soccer teams from the United States and Canada.
3. The tournament is comprised of the North and Central American Football Associations (CONCACAF), the United States Football Association (USFA), the Canadian Football Association (CFA) and the Mexican Football Association (FAM). The tournament is a regional tournament between North America and is of the same nature as the Copa Interclubes UNCAF (discontinued) in Central America and the CFU Club Championship in the Caribbean.
4. This tournament was first held in 2007, and until March 2011, when it was announced that it would be discontinued, it had been held four times.
5. The Cup consists of two stages: the group stage and the knockout stage, so the matches will be held in the United States.
6. In the first edition of the tournament (2007), all eight teams were invited to play, with four teams from Major League Soccer and four from the Mexican Premier League. For the second tournament (2008), the USL announced that the four teams with the best results from Major League Soccer in 2007 would participate, but it was later realized that this would make the four participating teams' schedules too busy (and at the same time, they would need to play in the North and Central American and Caribbean Champions League).
7. Consequently, beginning with the third tournament (2009), the USL prohibits any team from competing in both the CONCACAF Champions League and the North American Premier League, and instead the four highest-ranked teams in the league that do not qualify for the CONCACAF Champions League will play.
