Above everything the president has encountered in his five and a half years in office — above the fiscal-cliff showdown, the tragedy at the Benghazi consulate, the botched rollout of the Affordable Care Act — he says his unsuccessful effort to push gun-control legislation through Congress has been the most frustrating.
"We're the only developed country on Earth where this happens, and it happens now once a week," Obama said in a conversation hosted by Tumblr at the White House on Tuesday. "There's no other place like this."
For the president, the 2012 tragedy at Sandy Hook Elementary School still looms large.
"I have been in Washington for a while now and most things don't surprise me. But the fact that 20 6-year-olds were gunned down in the most violent fashion possible and this town couldn't do anything about it was stunning to me," the president said, referring to the 2012 school shooting in Newtown, Connecticut.
He blamed inaction in part on the fact that members of Congress are "terrified of the NRA," and he called on the public to pressure their lawmakers to implement gun-control laws. Until there is a "fundamental shift in public opinion," Obama said, "not that much is going to change."