There was a lot more than that. There were Nazi sympathizers, and saboteurs, and those who plotted to overthrow the US government. People like Father Charles Coughlin reading Goebbels’ propaganda on the radio to millions of listeners and forming an anti-government militia, and legislators like US Senator Ernest Lundeen working directly with Nazis and reading speeches literally written by them.

Highly recommend Rachel Maddow’s Ultra podcast if you want to say holy shit every few minutes.