Obama Shrugs Off Suggestions of Worst Year in Office

U.S. President Barack Obama on Friday shrugged off suggestions that 2013 has been his worst year in office but conceded frustration at the failure of Congress to tighten gun regulations.

In a final news conference before flying to Hawaii for the Christmas holidays, Obama said that "we have had ups and we have had downs" throughout his five years in the White House.

"I think this room has probably recorded at least 15 near-death experiences," Obama said when asked if 2013 was his worst year.

With surveys showing voter approval of him at below 50 percent in some of the lowest marks of his presidency, Obama said: "If you're measuring this by polls, my polls have gone up and down all throughout the course of my career. I mean, if I was interested in polling, I wouldn't have run for president."

But Obama acknowledged that he was stung by the failure to push through Congress measures to combat gun violence, such as background checks for weapons purchases, in the wake of the December 2012 massacre of 20 children and six school workers at Sandy Hook Elementary School in Newtown, Connecticut.

"There are areas where there have obviously been frustrations where I wished Congress had moved more aggressively," Obama said.

"Not passing background checks in the wake of Newtown is something that I continue to believe was a mistake," Obama said.

But Obama credited the debate following the Sandy Hook massacre with pushing states to "increase gun safety and to make sure that we don't see tragedies like this happen again."

However, numerous states have also loosened gun rules in the wake of Newtown in a backlash led by the National Rifle Association, the powerful pro-gun pressure group.

Separately, Obama welcomed a debate on the role of the National Security Agency, but said that leaks by Edward Snowden had caused "unnecessary damage" to U.S. intelligence capabilities.

Obama refused to be drawn on the possibility of amnesty or a presidential pardon for the fugitive IT contractor, who has been indicted on espionage charges.

"As important and as necessary as this debate has been, it is also important to keep in mind that this has done unnecessary damage to U.S. intelligence capabilities and U.S. diplomacy," Obama told reporters.

Intelligence chiefs say Snowden's revelations, made via several media outlets, inflicted significant damage on U.S. clandestine operations against terror groups, while deeply embarrassing the Obama administration.

On Wednesday, a panel of legal and intelligence experts chosen by the White House recommended curbing the powers of the NSA, warning that its mass spying sweeps in the war on terror have gone too far.

The report said the NSA should halt the mass storage of domestic phone records, and called for new scrutiny on snooping on world leaders plus privacy safeguards for foreigners and fresh transparency over U.S. eavesdropping.

The 300-page report unveiled 46 recommendations to reshape U.S. surveillance policy following the explosive revelations by Snowden, which outraged U.S. allies and civil liberties advocates.