
President Barack Obama speaks during a news conference in the Brady Press Briefing Room of the White House in Washington, D.C., U.S., on Friday, Dec. 18, 2015. Obama is trying to put Republicans on defense in the U.S. debate over gun rights with a call to ban people on the governments no-fly list from buying firearms. The trouble is his proposal may be unconstitutional. (Drew Angerer/Bloomberg via Getty Images)