Delaying America's war with Germany

What if Hitler does not declare war on the United States after Pearl Harbor?

It may delay the formal conflict, but Britain and the United States are already fighting Japan together and an American-German confrontation remains likely.

Japan's attacks put both Britain and the United States at war in the Pacific. The two powers would therefore cooperate against a common enemy regardless of Hitler's immediate decision. Germany would eventually face American power even without the December 1941 declaration. The counterfactual can alter the legal and political route into war, but the opposing alliance systems still pull the countries toward conflict.