As of the 2017 season, homegrown Canadian players will be considered domestic players at all MLS clubs. This is a change to the existing rules relating to domestic and international roster spots, opening the door for Canadian players to be considered domestic players on U.S. teams, instead of taking up limited international spots.
MLS, Canada Soccer, and U.S. Soccer announced on Wednesday that any player who meets the requirements to qualify as a Homegrown Player as a member of an MLS club academy, or has met similar requirements as a member of a Canadian Approved Youth Club, will count as a domestic player.