President Obama and Mitt Romney took direct aim at each other on Monday, with Romney charging that Obama has failed to accept moral responsiblity for his policies and the president defending his re-election campaign’s focus on the private-equity firm once headed by the former Massachusetts governor.

Obama’s sharp critique came after Romney aides and Republican operatives spent Monday peppering the president’s re-election campaign. The Romney campaign launched an ad highlighting remarks made by Newark Mayor Corey Booker on Meet the Press a day earlier calling the Obama campaign’s attacks on Bain “nauseating.”