
Republican presidential candidates are greeted by former first lady Nancy Reagan, center, before a Republican presidential candidate debate at the Reagan Library Wednesday, Sept. 7, 2011, in Simi Valley, Calif. From left are, Rep. Michele Bachmann, R-Minn., former Massachusetts Gov. Mitt Romney, Reagan, Texas Gov. Rick Perry, and Rep. Ron Paul, R-Texas. (AP Photo/Chris Carlson, Pool)

Republican presidential candidate former Massachusetts Gov. Mitt Romney arrives for a Republican presidential candidate debate at the Reagan Library Wednesday, Sept. 7, 2011, in Simi Valley, Calif. (AP Photo/Jae C. Hong)

** FILE ** Former Massachusetts Gov. Mitt Romney (left) and Texas Gov. Rick Perry participate in a Republican presidential candidate debate at the Ronald Reagan Presidential Library on Wednesday, Sept. 7, 2011, in Simi Valley, Calif. (AP Photo/Jae C. Hong)

Republican presidential candidates former Massachusetts Gov. Mitt Romney, left, and Texas Gov. Rick Perry answer a question during a Republican presidential candidate debate at the Reagan Library Wednesday, Sept. 7, 2011, in Simi Valley, Calif. (AP Photo/Jae C. Hong)

Republican presidential hopeful former Massachusetts Gov. Mitt Romney talks about his plan for creating jobs and improving the economy during a speech Tuesday, Sept. 6, 2011, in Las Vegas, at McCandless International Trucks. (AP Photo/Julie Jacobson)

Republican presidential candidate former Massachusetts Gov. Mitt Romney speaks during the American Principles Project Palmetto Freedom Forum Monday, Sept. 5, 2011, in Columbia, S.C. (AP Photo/ Mary Ann Chastain)

NO 'CRISIS': Former Massachusetts Gov. Mitt Romney said during a forum with other presidential candidates that he would be reluctant to use the 14th Amendment in an effort to reverse Roe v. Wade. (Associated Press)

ASSOCIATED PRESS NO 'CRISIS': Former Massachusetts Gov. Mitt Romney said during a forum with other presidential candidates that he would be reluctant to use the 14th Amendment in an effort to reverse Roe v. Wade.

Former Massachusetts Gov. Mitt Romney, who is running for the 2012 Republican presidential nomination, addresses the national convention of the Veterans of Foreign Wars on Tuesday, Aug. 30, 2011, in San Antonio. (AP Photo/Eric Gay)