Canada's great and all eh (sorry couldn't help it :), but there's a reason that what, 60%+ of the population lives within 20 miles of the US border.

But from what I know, the canadian system seems more likely to be what the US could transition to than, say the UK system.

FWIW, my understanding is that Canada's system is that the government acts like an insurance company, so rather than all medical facilities being government facilities, they are private and they simply bill the government. In the UK, all facilities are government run, so there is no billing at all [well I'm sure there is behind the scenes].