Gun control debate heats up after Nashville shooting.

Rep. Jamaal Bowman and Rep. Thomas Massie got into a shouting match about gun control as lawmakers left House votes on Wednesday evening. The exchange came in the wake of a shooter killing three nine-year-olds and three adults at a private Christian school in Nashville, Tenn. on Monday. Bowman criticized Republican lawmakers for their unwillingness to pass firearm restrictions, while Massie argued that allowing teachers to carry guns could prevent school shootings. The exchange continued as other lawmakers walked past the members.