text: During debates, Congressman William Barksdale once drew a knife on this politician.
full_question: During debates, Congressman William Barksdale once drew a knife on this politician. Abraham Lincolnonce told this man the country was trying to catch a "pretty big hog." He reportedly sneered "the country isgoing to the devil" after Senator Edmund Ross broke with his party during a crucial vote. This man insisted "ifyou don't kill the beast, it will kill you" after Edwin Stanton was removed. The New York Herald claimed thisclubfooted man had a "face of corpselike color" during the impeachment of his nemesis, Andrew Johnson. For10 points, name this Pennsylvania Congressman who was one of the main Radical Republican leaders duringReconstruction. 
first_sentence: During debates, Congressman William Barksdale once drew a knife on this politician.
raw_answer: Thaddeus Stevens =