Marijuana and Guns at the Supreme Court / Cornyn, Paxton and a Texas Runoff

Federal law prohibits users of illegal drugs from owning guns, but does this violate the Second Amendment? The Justices debate that question, with a focus on how the Founders handled "drunkards." Plus, James Talarico wins the Democratic Senate nod in Texas, as John Cornyn and Ken Paxton head to a GOP runoff.