1997 - Presidential Apology for the Tuskagee Syphilis Study
On May 16, 1997 President Clinton formally apologized to the men and families involved in the Tuskegee Study of Untreated Syphilis in the Negro Male. From 1932 to 1972, in Macon county, Alabama, the United States Public Health Service treated a group of 600 black men for syphilis. However, the treatment never actually occurred, although the participants were told they were being treated. While information from the study was published throughout the forty years it was in effect, it was an Associated Press story in 1972 that raised national awareness to shut down the study and led to revised federal rules on human subjects research.
Additional information: National Archives - Tuskegee Study