Coburn, Schumer Lock Horns Over Gun Control – Cooler heads prevailed on the Senate floor Thursday night after Oklahoma Republican Sen. Tom Coburn initially threatened to stall completion of the annual defense authorization bill amidst a feud with New York Democratic Sen. Charles E. Schumer about a gun rights amendment. Senate Armed Services Chairman Carl Levin, D-Mich., offered an agreement to set up consideration of a set of amendments, including a Coburn proposal to make it more difficult to keep veterans from owning guns. Schumer objected when he learned the amendment was in the queue.