Every movement in those days included nazi sympathizers and anti-semites. Except the marxists and bolsheviks.
So no cigar bud.
Turn of your tv and go learn some history. Otherwise youre gonna end up like bealoser, talking conspiracies all day.
Start with basic, wikipedia:
The America First Committee (AFC) was the foremost non-interventionist pressure group against the American entry into World War II. Peaking at 800,000 paid members in 450 chapters, it was one of the largest anti-war organizations in American history. Started on September 4, 1940, it was dissolved