Mostly this problem is contained in the fact that the US makes it so difficult for Canadians to get green cards (you heard it here), but if an American orchestra really wants a player, they have their ways.
“I still haven't heard anything from Apple about my hacks. There is a tool based on my work reverse-engineering Apple's FairPlay called jhymn that's been hosted on a U.S. server for over a year and nothing has happened.”