While the debate over gay marriage lingers, the election focus is shifting back to the economy as campaign teams for President Obama and Mitt Romney trade barbs. (May 14) Subscribe to the Associated Press: http://bit.ly/APYouTube Download AP Mobile: http://www.ap.org/mobile/ Associated Press on Facebook: http://apne.ws/c7lQTV Associated Press on Twitter: http://apne.ws/bTquhb Associated Press on Google+: http://bit.ly/zuTKBL