@johnldeboer Post Pearl Harbor very few. Pre PH a lot and a large percentage wanted no part in the war. There was a considerable number who supported Germany and there was the German American Bund - a Germany sanctioned party that had around 20K members and a lot more supporters. They dissolved on December 12, 1941.
see https://www.wikiwand.com/en/articles/Nazism_in_the_Americas