In the photo below, Charlie is kneeling with Marie Dressler in the front row. Mary Pickford and Douglas Fairbanks are behind them. Standing at left is future U.S. president Franklin Delano Roosevelt, who was then a New York state senator.1 FDR was not the only U.S. president that Chaplin met. In 1927, he was introduced to (future) president Herbert Hoover at a press dinner in New York City. 2
1Twenty-three years later, Chaplin would deliver the final speech from The Great Dictator at FDR’s third inaugural ball. You can listen to a recording of it here.
2Chaplin met Hoover again in 1940--also in New York City.