America First describes the anti-War sentiment that existed in America in the years leading up to the Japanese attack on Pearl Harbor. The America First organization consisted of a cross section of Americans both left and right including such liberal luminaries as Nation Magazine editor Oswald Garrison Villard.

One of the leaders of America First, aviator Charles Lindburgh, had pro-Nazi leanings and embraced the same anti-Semitic conspiracy theory that was originally popularized by Karl Marx in the 19th Century, a theory that made up a core belief of the Nazis.

The ADL, barely acknowledging anti-Semitism today including a leftist movement to boycott Israel and a recent New York Times headline implying that Israel is killing Palestinian children, has sent out a press release implying that Donald Trump is an anti-Semite for using the slogan 'America First' since Lindburgh was a leader of that group. This smear against Trump is an attempt at a political hit, one that will surely backfire.