The United States has a health-care system that is terrible and getting worse. It also has a health science system that is the best in the world and about to be dismantled.

The impending return of Donald Trump to the White House seems likely to collapse American health science, with consequences as disastrous for the rest of the world as for the approximately 340 million Americans in the U.S. Canada may be able to soften the impact here, but it will not be easy.