HEMPSTEAD, N.Y. (AP) - An aggressive President Barack Obama accused challenger Mitt Romney of favoring a "one-point plan" to help the rich in America and playing politics with the recent deadly terrorist attack in Libya in a Tuesday night debate crackling with energy and emotion just three weeks before the election.
Romney pushed back hard, saying the middle class "has been crushed over the last four years," that 23 million Americans are struggling to find work and that the death of the U.S. ambassador to Libya was part of an unraveling of the administration's foreign policy.
The president was feistier from the outset than he had been in their initial encounter two weeks ago, when he turned in a listless performance that sent shudders through his supporters and helped fuel a rise by Romney in opinion polls nationally and in some battleground states.
Republican presidential nominee Mitt Romney and President Barack Obama spar during the second presidential debate Tuesday in Hempstead, N.Y.
Obama and Romney disagreed, forcefully and repeatedly - about taxes, measures to reduce the deficit, energy, pay equity for women and health care as well as foreign policy across 90 minutes of a town-hall style debate.
Immigration prompted yet another clash, Romney saying Obama had failed to pursue the comprehensive legislation he promised at the dawn of his administration, and the president saying Republican obstinacy made a deal impossible.
Romney gave as good as he got.
"You'll get your chance in a moment. I'm still speaking," the former Massachusetts governor said at one point while Obama was mid-sentence, drawing a gasp from the audience after the president attempted to interrupt the challenger. He said the president's policies had failed to jumpstart the economy and had cramped energy production.
The open-stage format left the two men free to stroll freely across a red-carpeted stage, and they did. Their clashes crackled with energy and tension, and the crowd watched raptly as the two sparred while struggling to appear calm and affable before a national television audience.
While most of the debate was focused on policy differences, there was one more-personal moment, when Obama said Romney had investments in China.
"Mr. President, have you looked at your pension?" Romney interrupted.
"You know, I don't look at my pension. It's not as big as yours," shot back Obama to his wealthier rival.
Under the format agreed to in advance, members of an audience of 82 uncommitted voters posed questions to the president and his challenger.
Nearly all of them concerned domestic policy until one raised the subject of the recent death of the U.S. ambassador to Libya in a terrorist attack at an American post in Benghazi. Romney said it took Obama a long time to admit the episode had been a terrorist attack, but Obama said he had said so the day after in an appearance in the Rose Garden outside the White House.
When moderator Candy Crowley of CNN said the president had in fact done so, Obama, prompted, "Say that a little louder, Candy."
Secretary of State Hillary Clinton has taken responsibility for the death of Ambassador L. Christopher Stevens and three other Americans, but Obama said bluntly, "I'm the president, and I'm always responsible."
Romney said it was "troubling" that Obama continued with a campaign event in Las Vegas on the day after the attack in Libya, an event the Republican said had "symbolic significance and perhaps even material significance."
Obama seemed to bristle. He said it was offensive for anyone to allege that he or anyone in his administration had used the incident for political purposes. "That's not what I do."
The president then mentioned the death of Osama bin Laden, which has been brought up several times during the Obama campaign.
One intense exchange focused on competing claims about whether energy production is increasing or slowing. Obama accused Romney of misrepresenting what has happened - a theme he returned to time and again. Romney strode across the stage to confront Obama face to face, just feet from the audience.
Both men pledged a better economic future to a young man who asked the first question, a member of a pre-selected audience of 82 uncommitted voters.
Then the president's determination to show a more aggressive side became evident.
Rebutting his rival's claim to a five-point plan to create 12 million jobs, Obama said, "Gov. Romney says he's got a five-point plan. Gov. Romney doesn't have a five-point plan. He has a one-point plan. And that plan is to make sure that folks at the top play by a different set of rules."
Unable to respond at length because of the debate's rules, Romney said the accusations were "way off the mark."
But moments later, he reminded the national television audience of the nation's painfully slow recovery from the worst recession in decades.
There are "23 million people struggling to find a job. ... The president's policies have been exercised over the last four years and they haven't put America back to work," he said. "We have fewer people working today than when he took office."
Economic growth has been slow throughout Obama's term in office, and unemployment only recently dipped below 8 percent for the first time since he moved into the White House. Romney noted that if out-of-work Americans who no longer look for jobs were counted, the unemployment rate would be 10.7 percent.