U.S Citizen but lives in Canada. Would my son still have opportunity for scholarships?

I don’t want to enter a dispute about grading. Just look at what’s considered competitive in Canada and what’s considered competitive in the US, whether to enter universities (UT, McGill, UBC/ UMichigan, Northeastern) or medical schools. Or look at the conditions for the super selective CAPS Honours.

Another possibility : do a DEC Science Honours or DEC Arts&Science, and apply directly to medical school in Quebec.