The International Opium Convention is signed at The Hague, Netherlands, and is the first international drug control treaty. The agreement was signed by Germany, the U.S., China, France, the UK, Italy, Japan, Netherlands, Persia, Portugal, Russia, and Siam.

U.S. president Harry S. Truman establishes the Central Intelligence Group or CIG, an interim authority that lasts until the Central Intelligence Agency is established in September of 1947.

The New York City "Mad Bomber," a man named George P. Metesky, is arrested in Waterbury, Connecticut and charged with planting more than 30 bombs. Metesky was angry about events surrounding a workplace injury suffered years earlier. Of the thirty-three known bombs he planted, twenty-two exploded, injuring fifteen people. He was apprehended based on an early use of offender profiling and because of clues given in letters he wrote to a newspaper. At trial he was found legally insane and committed to a state mental hospital.

American lawyer Alger Hiss is convicted of perjury in connection with an investigation by the House unAmerican Activities Committee (HUAC), at which he was questioned about being a Soviet spy. Hiss served forty-four months in prison. Hiss maintained his innocence and fought his perjury conviction until his death in 1996 at age 92.

U.S. President Jimmy Carter pardons nearly all of the country's Vietnam War draft evaders, many of whom had emigrated to Canada. He had made the pardon pledge during his election campaign, and he fulfilled his promise the day after he took office.