US President Barack Obama speaks to students and others at the University of Iowa on April 25, 2012 in Iowa City, Iowa. President Obama is on a two-day trip through the 2012 US Presidential race battle ground states of North Carolina, Colorado and Iowa where he is speaking about the cost of student loans and other issues. AFP PHOTO/Brendan SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/GettyImages)