may 27, 1953 - Executive Order 10450
President Dwight D. Eisenhower issued Executive Order 10450 on April 27, 1953. Effective May 27, 1953, it revoked President Truman's Executive Order 9835 of 1947, and dismantled its Loyalty Review Board program. Instead it charged the heads of federal agencies and the Civil Service Commission, supported by the Federal Bureau of Investigation (FBI), with investigating federal employees to determine whether they posed security risks. It expanded the definitions and conditions used to make such determinations.
Under the order thousands of lesbian and gay applicants were barred from federal employment and over 5,000 federal employees were fired under suspicions of being homosexual. It came as a part of the US "Lavender Scare" witch hunts which contributed to and complemented the McCarthyist Red Scare. From 1947 to 1961 the number of firings based on sexual orientation were far greater than those for membership in the Communist party. It was not until 1973 that a federal judge ruled that a person's sexual orientation alone could not be the sole reason for termination from federal employment, and not until 1975 that the United States Civil Service Commission announced that they would consider applications by gays and lesbians on a case by case basis.
Added to timeline:
History of Leadership In The States