Zachary Taylor – 139.8
“Old Rough and Ready” Zachary Taylor, the 12th President of the United States, is remembered for his brief tenure. His military leadership skills earned him the title before he entered politics. As president, he was recognized for his bravery throughout the Mexican-American War. He took office in March 1849 and despite owning slaves, he embraced anti-slavery arguments. New Mexico and California became states during his presidency. Taylor died of cholera in July 1850, while still in office. Despite being a combat hero, Zachary Taylor had a low IQ compared to other presidents, at 139.8.