William Howard Taft – 139.5
While he may appear to be near the bottom of the list, William Howard Taft was the only president to have served in both the executive and judicial departments of government, with an IQ of 139.5. He became the 10th Chief Justice of the United States Supreme Court after serving as president from 1909 to 1913. William H. Taft, the 27th President of the United States, was the first and only head of state to be named to the United States Supreme Court. He was born and raised in Ohio and went to Yale University to study law. During his stay at the famous university, he was reputedly a member of the secret society Skull and Bones.
William Howard Taft
James Buchanan – 139.6
The 15th president had a similar performance to his predecessor. Most historians will recall that James Buchanan set some lofty aspirations for himself during his presidency. During his administration, Buchanan claimed to match George Washington’s achievements. For example, James Buchanan had a 139 IQ. Unfortunately, he didn’t quite make it.
James Buchanan
