MacArthur as president at the end of the war

What if MacArthur won the 1944 US presidential election and controlled the nuclear button?

He would likely seek a more forceful personal role in ending both wars, with unpredictable consequences for relations with Stalin and the Pacific.

The answer suggests MacArthur would try to shape both the European and Pacific ends of the war while struggling to give up direct control of the Pacific. His meeting with Stalin would make the postwar political consequences especially uncertain. His strong anti-communism and weaker political judgment than Churchill's could destabilise Allied coordination. Control of nuclear weapons adds another danger because the discussion recalls his later willingness to consider atomic use in Korea.