U.S. National Soccer Team Players Association
The U.S. National Soccer Team Players Association (USNSTPA) is the players union for the members of the United States men's national soccer team. Though the organization has existed since 1996, they rose to prominence within American soccer in late 2004 when their collective bargaining negotiations with the United States Soccer Federation (USSF) became public.
Source: Wikipedia — U.S. National Soccer Team Players Association (CC BY-SA 4.0)