Obama, weary from giving the same speech: 'We all have part to play' to end gun violence

President Barack Obama was noticeably tired and hoarse on Thursday morning after a briefing with national security advisors on the San Bernardino shooting. He was tasked — once again — with delivering a message to the public after a mass shooting in the United States.While the motivation behind the attack is still unclear, Obama highlighted that easy access to weapons played an important role.