As our recent eight-nation bracket tournament showed, many people think the United States health care system has a lot of problems. So it seems reasonable to think of policy changes that make things better, not worse. Making it harder for immigrants to come here to practice medicine would fail that test.
The American system relies to a surprising extent on foreign medical graduates, most of whom are citizens of other countries when they arrive. By any objective standard, the United States trains far too few physicians to care for all the patients who need them. We rank toward the bottom of developed nations with respect to medical graduates per population.