I'll try to explane this as best as I can
Usa Hockey is one of the largest hockey leagues in the world. They work with hockey players from ages 4 to 50. Every minor league in the Usa to the US Olympic Hockey team.
All US College Hockey is in direct association with Usa Hockey. Every minor league in the Us is associated with USa Hockey, and they govern over 3000 games a year.
Every USA Hockey player in the US has skated for USA Hockey at a point in there carrer.
UsaHockey.com will answer more than I can.
Hope that cleared some stuff up!
Sincerely, Matthew Crowder. Usa Hockey