Rubio to endorse Romney? endorses Romney

A Miami Herald blog is reporting that Senator Marco Rubio (R-Fl) is about to endorse has endorsed Mitt Romney for President. Florida Senator Marco Rubio is about to endorse Republican presidential contender Mitt Romney -- just a week after his political mentor, Jeb Bush, threw in with the party's frontrunner. Update** he's on FOX's Hannity now and made it official.Rubio's endorsement is another