Transportation Secretary Ray LaHood (left) answers questions during a briefing with White House Press Secretary Jay Carney on Friday. Win McNamee/Getty Images hide caption

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President Obama speaks about strengthening the middle class and the nation's struggle with gun violence at Hyde Park Academy in Chicago on Friday. M. Spencer Green/AP hide caption

itoggle caption M. Spencer Green/AP

President Obama plays a learning game while visiting children at College Heights Early Childhood Learning Center on Thursday in Decatur, Ga. Obama's campaign-style trip this week was to end with a nonworking stop in Florida. Brendan Smialowski/AFP/Getty Images hide caption

itoggle caption Brendan Smialowski/AFP/Getty Images