No one has ever been as dangerous to America as Trump — it can happen here

The Office of Strategic Services (OSS) was the American predecessor to the CIA and was formed during World War II. They hired a psychoanalyst, Dr. Walter C. Langer, to undertake an exhaustive, nearly-year-long analysis of the personality of Adolf Hitler, from his earliest influences through his later years as then-Führer and mass murderer.

Langer’s profile of Hitler wasn’t declassified until 1972, when much of it was published in a book titled The Mind of Adolf Hitler. As The New York Times explained that year...