Major League Soccer is found on earth.
Major League Soccer . The league comprises 22 teams -- 19 in the U.S. and 3 in Canada . Major League Soccer was founded in 1993 as part of the United States ' successful bid to host the 1994 FIFA World Cup . The league has a fixed membership , like most sports leagues in the United States and Canada , which makes it one of the world 's few soccer leagues that does not use promotion and relegation , a practice that is uncommon in the two countries . MLS headquarters is located in New York City .