Answer
The US President when Alger Hiss was released from prison was Dwight Eisenhower, who served as the 34th President of the United States from 1953 to 1961. Hiss, a former State Department official, was convicted of perjury in 1950 for denying that he had passed classified information to the Soviet Union during the 1930s. He was released from prison in 1954 after serving 44 months of his five-year sentence.