John Mccain, 2012 Republican Presidential Candidate | featured news

Gloria Borger says Romney is likely to have learned a lesson from McCain's choice of Sarah Palin as a running mate.

They were at each others' throats at this time four years ago, but John McCain stood beside Mitt Romney today to endorse his former opponent in the New Hampshire primary. McCain, who defeated George W. Bush here in 2000 and beat Romney in 2008, said, "it's with some nostalgia that I return to this place that I love so well" -- but his main job is to help "make Mitt Romney the next president of the United States." Granite State voters, he said, can help Romney wrap up the GOP nomination quickly.

Sen. John McCain, the Republican presidential candidate in 2008, took aim Sunday at the field of contenders for the 2012 GOP nomination, accusing them of "isolationism." "We cannot repeat the lessons of the 1930s, when the United States of America stood by while bad things happened in the world," McCain said in an interview with ABC's "This Week."