Minor hockey is an umbrella term for amateur ice hockey which is played below the junior age level. Players are classified by age, with each age group playing in its own league. The rules, especially as it relates to body contact, vary from class to class. In North America, the rules are governed by the national bodies, Hockey Canada and USA Hockey, while local hockey associations administer players and leagues for their region. Many provinces and states organize regional and provincial championship tournaments, and the highest age groups in Canada and USA also participate in national championships.