I understand it's in progress.All this would probably become a non-issue if Amtrak would get with the program and start doing e-ticketing. Heck even Indian Railways allows me to get on the web make a reservation and get an e-ticket and print out a boarding pass on my printer and just go and board the train on the appointed day. I can't understand why it is so difficult for Amtrak to do the same.I personally think that if you use a US or Canadian address, it is assumed you are a US or Canadian resident. I think one of the main reasons they want a US or Canadian address is that AGR will mail out the award tickets if the trip is more than 1 month in the future, and AGR doesn't want to pay the postage to the UK or France or South Africa or Japan or ...!
It's just in progress in typical government bureaucratic style. It will happen. Eventually. Someday. Maybe.