Kelsey Campbell, of Milwaukie, Ore., lifts Helen Maroulis, of Rockville, Md., right, off the mat in their 55 kg freestyle finals match at the U.S. Olympic Wrestling Team Trials on Saturday, April 21, 2012, in Iowa City, Iowa. (AP Photo/Charlie Neibergall)
Kelsey Campbell, of Milwaukie, Ore., lifts Helen Maroulis, of Rockville, Md., right, off the mat in their 55 kg freestyle finals match at the U.S. Olympic Wrestling Team Trials on Saturday, April 21, 2012, in Iowa City, Iowa. (AP Photo/Charlie Neibergall)
** FILE ** Volunteers Jason Bassett, of Des Moines, Iowa, left, and Mark Hancock, of Windsor Locks, Conn., right, work at Republican presidential candidate, former Massachusetts Gov. Mitt Romney's campaign headquarters, Friday, Dec. 30, 2011, in Des Moines, Iowa. (AP Photo/Charlie Neibergall)
A campaign sign for Republican presidential candidate U.S. Rep. Ron Paul, R-Texas, sits in front of a home, Tuesday, Dec. 27, 2011, in Ankeny, Iowa. (AP Photo/Charlie Neibergall)
Minnesota Vikings' Adrian Peterson breaks away for a 39-yard run during the first half against the New Orleans Saints Sunday, Dec. 18, 2011, in Minneapolis. (AP Photo/Charlie Neibergall)
Former Massachusetts Gov. Mitt Romney (left) and former Speaker of the House Newt Gingrich take part in the Republican presidential debate on Saturday, Dec. 10, 2011, in Des Moines, Iowa. (AP Photo/Charlie Neibergall)
Texas Gov. Rick Perry (left) and former Massachusetts Gov. Mitt Romney take part in the Republican presidential debate on Saturday, Dec. 10, 2011, in Des Moines, Iowa. (AP Photo/Charlie Neibergall)
Republican presidential candidates former Massachusetts Gov. Mitt Romney, left, and former Speaker of the House Newt Gingrich, right, take part in the Republican debate, Saturday, Dec. 10, 2011, in Des Moines, Iowa. (AP Photo/Charlie Neibergall)
** FILE ** In this Dec. 1, 2011, file photo, Republican presidential candidate, former House Speaker Newt Gingrich speaks during a meeting with employees at Nationwide Insurance in Des Moines, Iowa. (AP Photo/Charlie Neibergall, File)
