In order to get treatment, that’s why.
Starry-eyed leftists love to praise the Canadian model of health care socialism. It seems so wonderfully egalitarian and progressive to get rid of the nasty remnants of the free market like individual choice, responsibility, and competition. If you read this Wall Street Journal editorial you’ll discover that there’s a severe downside to this socialist dream: people can’t get the treatment they need.
Canadians can come to the US to get medical care they need, but what happens if the US adopts anything like the Canadian model? Where will they go then? And where will WE go?