Considering the opurtunity and the level of competition they will see especially against the likes of Japan, Cuba, and South Korea who would stop there respective leagues for the Olympics. Teams would be thrilled to send prospects over. As long as they're monitored and not abused. Its in the middle of the minor league season. Its not like you would be extending their season.
Canada has had a lot of success in the Pan Am Games. They would certainly be competitive with more and more talent piping through.