M.A.H.A. District 4 is the local governing body for the sport of ice hockey within the district boundaries as defined by the Michigan Amateur Hockey Association, an Affiliate of USA Hockey, Inc. As such, the mission is identical within the District, M.A.H.A., and USA Hockey:  To promote the growth of ice hockey in America and to provide the best possible experience for all participants by encouraging, developing, advancing, and administering the sport.