The document discusses historical medical experiments conducted by the U.S. government on human subjects without their consent. It summarizes the recent apologies by Secretary of State Hillary Clinton and Secretary of Health Kathleen Sebelius for the 1940s syphilis experiments by the U.S. on Guatemalan prisoners, soldiers and mental patients. It also mentions comparisons between these experiments and the infamous Tuskegee syphilis study conducted from 1932 to 1972 on African American men in Alabama.