when did he become president of the united states?
1921
Warren G. Harding
 was the 29th president of the United States from 1921 until his death in 1923. A member of the Republican Party, he was one of the most popular U.S. presidents to that point. After his death, a number of scandals—including Teapot Dome—came to light, as did his extramarital affair with Nan Britton; each eroded his popular regard.
who is warren g. harding? He was the 29th president of the United States
wiki:19641740
Warren G. Harding [SEP] Introduction
Warren Gamaliel Harding (November 2, 1865 – August 2, 1923) was the 29th president of the United States from 1921 until his death in 1923. A member of the Republican Party, he was one of the most popular U.S. presidents to that point. After his death, a number of scandals—including Teapot Dome—came to light, as did his extramarital affair with Nan Britton; each eroded his popular regard. Harding lived in rural Ohio all his life, except when political service took him elsewhere. As a young man, he bought "The Marion Star" and built it into a successful newspaper. In 1899, he was elected to the Ohio State Senate; he spent four years there, then was elected lieutenant governor.