If socialist healthcare is so great, what are all those Canadians doing in our hospitals?

I was in a hotel in Houston recently and ran into several families from the UK who had a family member receiving medical treatment for cancer at the MD Anderson Cancer Center there. I have read many stories of Canadians flying south for medical treatment. I began to wonder, if socialized medicine is as great as the UK and Canada claim, why are these people here?

So I began looking into medical tourism. Most of the information you will find on the internet talks about US citizens going to Asia for great care at a much reduced price. I have no problem with that. The American Medical Association wielding the sword of government has made US healthcare insanely expensive. I once told a doctor from Scotland what Americans pay for an office visit and he called me a liar. He said no sane person would pay that much. I had to agree with his last statement.