Who was the first US president who was a Scout?

William Howard Taft was the first Honorary President of the Boy Scouts of America in 1911.

John F. Kennedy was the first president who had been a Scout as a youth. He was a member of Troop 2 in Bronxville, New York from 1929 to 1931, attaining the rank of Star Scout. JFK was active in the Boston Council from 1946 to 1955 as district vice chairman, member of the executive board and representative to the National Council.