["< sod > the'''north american soccer league'''('''nasl''') is a professional and men's [ [ association football | soccer ] ] league formed with its 12 teams : starting 10 in the united states ( with 1 in puerto rico ) and 2 in canada. the it is sanctioned by the [ [ united states soccer federation ] ] ( u. s. soccer ) and as the division ii league in the [ [ united states soccer league system | american league system ] ], under [ [ and major league soccer ] ] ( mls ) and above the [ [ united soccer league ] ] ( formerly, usl pro ). it is headquartered in [ [ new york city ] ]. < eod > < sod > the'''north american soccer league'''('''nasl''') is a professional men's [ [ association football | soccer ] ] league with 12 teams : 9 in the united states, 2 in canada and 1 in puerto rico. it is sanctioned by the [ [ united states soccer federation ] ] ( u. of s. soccer ) as the division ii league in the [ [ united states soccer league classification system | american league system ] ], under [ [ major league soccer ] ] ( mls ) and above as the [ [ united soccer league ] ] ( formerly, usl pro ). it is headquartered in [ [ new york city ] ]. < eod >"]