FILE - In this June 28, 2012, file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney pauses while speaking about the Supreme Court's health care ruling in Washington. High unemployment threatens not only President Barack Obama's re-election prospects. It will also bedevil whoever occupies the White House for the next four years. (AP Photo/Charles Dharapak, File)

Photo by: Charles Dharapak

FILE - In this June 28, 2012, file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney pauses while speaking about the Supreme Court's health care ruling in Washington. High unemployment threatens not only President Barack Obama's re-election prospects. It will also bedevil whoever occupies the White House for the next four years. (AP Photo/Charles Dharapak, File)