Major League Soccer is a men's professional soccer league, sanctioned by U.S. Soccer, that represents the sport's highest level in both the United States and Canada.
Number of teams: 22
Headquarters: New York City, NY
Other club(s) from: Canada
Current MLS Cup: Seattle Sounders FC (1st title)l; (2016)
Current Supporters' Shield: FC Dallas (1st shield); (2016)