Because there were messages intercepted from Germany to Mexico, telling Mexico to join the war and attack the United States. I hope this helps :)
The 3 ways that a court can handle a case is by 1 Jurisdiction, 2 oral arguments before the court and last but not least the supreme courts opinion this is where they go in the bac and discuss it
Hope this helps
Answer:
They hated Japan anyways so why would they try to help Japan.
Explanation:
