Former GOP Sen. Bob Corker says he's not surprised Mitt Romney isn't running for re-election because politics are 'not as conducive' to problem-solving as they once were
Former Sen. Bob Corker of Tennessee.AP Photo/Richard Drew
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<li>Ex-Sen. Bob Corker said he wasn't surprised to hear of Mitt Romney's retirement from the Senate.</li>
<li>"I understand why he migh… [+2437 chars]
