1. On March 23, 1933, President Franklin D. Roosevelt signed the Cullen-Harrison Act, which legalized the sale of 3.2% beer in the District of Columbia and other states. The act was a precursor to the repeal of Prohibition nationwide.

2. In 1945, on March 23, the United States Senate approved the creation of the United Nations. The organization was founded in San Francisco two months later.

3. The National Zoo in Washington, D.C., opened its doors on March 23, 1891. The zoo has since become one of the city's most popular attractions, with thousands of visitors each year.

4. James Garfield, the 20th President of the United States, was inaugurated on March 4, 1881. He was shot by an assassin on July 2 of that year, and after 11 weeks of suffering, he died on September 19. On March 23, 1882, a monument to Garfield was dedicated in the city's Garfield Park.

5. In 1973, on March 23, the United States Senate ratified the Paris Peace Accords, ending America's involvement in the Vietnam War. The agreement established a ceasefire in Vietnam and called for the release of American prisoners of war.