I understand but he did not have ambitions for office.
Now I have read that he did, but it had to be on his terms.
Which was too much for the “GOP Power Brokers” that existed at the time. Also there were a lot of people still alive who remembered his behavior against the “Bonus Army” during the Hoover administration. MacArthur always came across to the public as perhaps a little too patrician for American politics when compared to say Eisenhower.