Julie Jacobson / AP
Republican presidential candidate former Massachusetts Gov. Mitt Romney walks to speak to supporters at his Nevada caucus night victory celebration in Las Vegas, Nevada, Feb. 4.
Jonathan Ernst / Getty Images
From governor's son to presidential contender, a look at the life of Republican Mitt Romney.
Michael O'Brien of msnbc.com reports:
Romney turned his attention to Obama (and not his GOP foes) in remarks before an especially boisterous crowd Saturday night in Las Vegas.
"This president began his term by apologizing for America. He should now be apologizing to America!" Romney said. "America needs a president who can fix the economy because he understands the economy. I do, and I will."
Full story: Romney wins Nevada caucus, solidifying momentum