I admit I'm too lazy to look at each of these links. Can you just guide us to the one where the 10% figure pops up, and let us see if it's from a reliable source, not alex jones or equivalent. I would guess that the number of Canadians per capita coming to the U.S. for care is statistically equal to or less than the number of U.S. citizens going to Canada for care per capita, with both numbers adjusted for distance. That's the comparison I'd like to see. (Let us not lose sight of the fact that canada's population is concentrated relatively near the U.S. border, whereas this is not at all true of the United States.)
On the other hand I wouldn't be at all surprized to learn that 10% of canadians living within say x miles of the border have gone to the U.S. for care or an MRI or such. where X is a number less than 200. There are NMR outfits along the Canadian border on the U.S. side that specialize in this. They charge way less than the charge for an NMR deep in the U.S. If someone is a skilled manipulator of public opinion there are all kinds of opportunities to mislead. And I would say traders are probably more gullible than average.
On the other hand what may matter is a comparison of Canadians crossing the border for treatment with the number of Americans crossing into canada for treatment, adjusted for population and distance. Then you'll have some useful information perhaps. I don't think you'll find that number.
What this country, the U.S.A., needs is better thinkers and a minimum 50% reduction in healthcare costs with quality and outcomes brought up to the standards of the other industrialized countries. . So next I'll hear from someone in the top few percent of the wealth distribution telling me how cutting edge and wonderful U.S. health care is. Well before you bite, talk to someone on the street in the U.S., and then , if you can find anyone on the street in Canada, talk to them.
