Birmingham United Soccer Association was formed in 2006 as a result of a merger between Mountain Brook Soccer Club and American Jets Soccer Club. With over 4,500 players a season and over 9,000 annually, access to over 35 soccer fields at seven venues and seven full-time staff members, BUSA has grown into one of the largest soccer clubs in the Southeast. In 2009, BUSA became an official member of the Elite Clubs National League (ECNL), the highest level of youth soccer for girls in the USA.  In 2017, BUSA became a founding member of Boys ECNL.