It was a Southern Senator (SC?) named Sumner who caned the crap out of some Yankee who had been spouting off about the South. I recall that the guy returned to the legislature, but it was after a long convalescence. It was a seriously bad beating.
No, I was wrong. Sumner was the Yankee. Here is what Wiki has on it:
Sumner said Douglas (who was present in the chamber) was a “noisome, squat, and nameless animal...not a proper model for an American senator.” Most serious was his extreme insult of Butler as having taken “a mistress who, though ugly to others, is always lovely to him; though polluted in the sight of the world, is chaste in his sight—I mean, the harlot, Slavery.” Not content to leave his assault on a political level, Sumner’s three hour oration took a very personal and cruel turn as he began to mock the 59 year-old Butler’s manner of speech and physical mannerisms, both of which were impaired by a stroke that Butler had suffered earlier.
Two days later, on the afternoon of May 22, Preston Brooks, a congressman from South Carolina and Butler’s nephew, confronted Sumner as he sat writing at his desk in the almost empty Senate chamber. Brooks was accompanied by Laurence M. Keitt also of South Carolina and Henry A. Edmundson of Virginia. Brooks said “Mr. Sumner, I have read your speech twice over carefully. It is a libel on South Carolina, and Mr. Butler, who is a relative of mine.” As Sumner, who was six feet and four inches tall, began to stand up, Brooks began beating Sumner on the head with a thick gutta-percha cane with a gold head. Sumner was trapped under the heavy desk (which was bolted to the floor), but Brooks continued to bash Sumner until he ripped the desk from the floor. By this time, Sumner was blinded by his own blood, and he staggered up the aisle and collapsed, lapsing into unconsciousness. Brooks continued to beat Sumner until he broke his cane, then quietly left the chamber. Several other senators attempted to help Sumner, but were blocked by Keitt who was holding a pistol and shouting “Let them be!”
Sumner did not attend the Senate for the next three years, while recovering from the attack. In addition to the head trauma, he suffered from nightmares, severe headaches and (what is now understood to be) post-traumatic stress disorder. During that period, his enemies subjected him to ridicule and accused him of cowardice for not resuming his duties in the Senate.