<p>FILE - In this Oct. 5, 2011 file photo, Sen. Marco Rubio, R-Fla. speaks in Washington. Not it! Republicans considered to be up-and-comers are scrambling to make it known they have no interest in becoming Mitt Romney?s running mate, taking themselves off the still-forming short list of would-be vice presidents. With Romney poised to win the GOP nomination in June _ if not earlier _ some of the focus has shifted to his pick for the number-two spot on his ticket but no…

April 5, 2012