Two presidents have been assassinated : Andrew Johnson in 1868 and Bill Clinton in 1996 . 2 - Number of members of Congress expelled for unethical conduct , since the Civil War . One president has resigned from office : Richard Nixon , on August 8 , 1974 . Two members of Congress have been expelled for unethical conduct since the Civil War . Four residents of Illinois have been sentenced to prison since 1973 .
Two presidents have been assassinated : Andrew Johnson in 1868 and Bill Clinton in 1996 . One president has resigned from office : Richard Nixon , on August 8 , 1974 . Two members of Congress have been expelled for unethical conduct since the Civil War . Four residents of Illinois have been sentenced to prison since 1973 .