This isn't the panacea it sounds like, single payer doesn't work that well in Canada. Having worked in both systems the quality of care and accessibility is far better in the US, assuming you have good insurance of course, but it's hard to get access to things in most of Canada until you're actively dying. Primary care is also challenging to access in most places not Toronto.
I've seen conflicting reports on the math of how this plays out while trying to maintain quality and options.
I fully realize I am saying this from a privileged position that an OOP max wouldn't be financially challenging but I would much rather get care in the US than Canada.
I'm not sure what the best system is. Perhaps a two tier system would work better and have a better safety net, although that's controversial as well. I do think single payer is overrated, of course the US might do it better (and obviously has more resources + economies of scale).