USA Hockey is recognize by the International Olympic Committee and the United States Olympic Committee as the governing body for amateur ice hockey in the United States and is a member of the International Ice Hockey Federation. The organization is based in Colorado Springs, Colorado, and has nearly 600,000 registered members. The 'USA Hockey Rules' and 'Casebook of Ice Hockey' are updated every two years in odd-numbered years. In off years, a "rules emphasis" is released as an addendum for the rulebook, and during rule-change years any USA Hockey member may submit a rule change proposal to the Board of Directors for consideration.