The A-League was a professional men's soccer league which featured teams from the United States and Canada.

In 1990, the WSA and ASL merged to form the American Professional Soccer League with twenty-two teams across the United States.

In 1992, the SISL renamed itself the United States Interregional Soccer League (USISL) and had grown to twenty-one teams.

This led to three Canadian teams, the Vancouver 86ers, Toronto Blizzard and Montreal Impact joining the American Professional Soccer League for the 1993 season.

It remained the top league for Canadian teams throughout its existence until 2007 when Toronto FC debuted in MLS.

Regular season matches between Canadian teams were used to award the fan created Voyageurs Cup,