Answer: President James Madison
Ok, so that there is a bunch of stuff. There is evidence that President Roosevelt knew there would be an attack on Pearl harbor, but he decided to let it happen so that the US would be in on the war (we were not before the attack).
There's not a straight forward answer, but I hoped this helped!
Answer:
The Truman Doctrine was an American foreign policy with the primary goal of containing Soviet geopolitical expansion during the Cold War. It was announced to Congress by President Harry S. Truman on March 12. to pass any legislation Truman needed the support of the Republicans.