Army Captain Sues Obama Over ISIS Fight

Capt. Nathan Michael Smith supports the U.S. military's mission against ISIS, but believes the president does not have the legal authority to wage that fight because Congress hasn't authorized it. He filed suit against President Obama this week, citing the War Powers Resolution, the Vietnam-era law that says the president must withdraw from hostilities after 60 days if Congress hasn't authorized the military action. We speak with Bruce Ackerman, a Yale Law School professor and one of Capt. Smith's legal advisers.