1879James Shields, a former Illinois Supreme Court justice, began a term as a U.S. senator from Missouri. He had previously served in the Senate representing Illinois from 1849 to 1855 and from Minnesota from 1858 to 1859. He is the only senator to serve three different states.1998Theodore Kaczynski pleaded guilty to federal charges he was the Unabomber. He killed three people and injured 23. He agreed to life in prison without parole. He was the target of the FBI's longest and costliest investigation.