Because he is awesome.
"ABC's Emily Friedman (@abcemily) reports: After spending the day in Chicago fundraising, Mitt Romney sat down with small business owners at Gino's East, a pizza joint famous for their deep-dish pizza.
Not wanting any of the leftover slices to go to waste, Romney sent the remaining pies to where else but President Obama's Chicago reelection headquarters.
Asked if the pies actually made it to Obama's HQ, a campaign source said that they had."