Including George W. Bush’s grandad:

Bush was a founder and one of seven directors (including W. Averell Harriman) of the Union Banking Corporation (holding a single share out of 4,000 as a director), an investment bank that operated as a clearing house for many assets and enterprises held by German steel magnate Fritz Thyssen, an early supporter and financier of the Nazi Party. In July 1942, the bank was suspected of holding gold on behalf of Nazi leaders. A subsequent government investigation disproved those allegations but confirmed the Thyssens’ control, and in October 1942 the United States seized the bank under the Trading with the Enemy Act and held the assets for the duration of World War II.

Sure. For the most part, the US gov didn’t sign onto that… except for that time the US and the UK decided to pressure France and Mexico into stopping all logistical aid to the Spanish anarchists - making a fascist victory in Spain essentially a foregone conclusion.