Yes, I have read that the rich Canadians just come south to buy the care they need, and avoid the long waits.
Where I live here in rural Washington State, (I think I may have already posted this?) there are many old people with life-threatening conditions like hypertension, and have had no medical care at all for a year or two. No doctors around; they come, promise to stay, and then leave within a year..
I read that Medicare is many $million (maybe it was trillion) in debt.