In the 1930s America was not a superpower. America was still in the depths of terrible economic depression. America's arsenel was woefully out of date, closer to tools of the First World War, then the Second.
After Pearl Harbor, it took all we could muster to save ourselves, let alone the rest of the world. The Frog doesn't have a clue.
Very good points. Let me add that France actually had a massive standing army at the time that dwarfed the United States, British and German forces at the time. The failure was the French chickened out of using their superior military while they still had the upper hand. They dawdled and appeased their way through the 1930’s (along with the Brits) until Hitler was too strong to stop. Of course, you could argue even then, they could have beaten him if they took the initiative when he invaded Poland because he had left a relatively small force on the French border.