Washington ( CNN ) Florida Sen. Marco Rubio is on track to run for President in 2016 even if Jeb Bush also jumps into the race , a source close to Rubio says . The source told CNN that a Bush candidacy -- increasingly likely after the former Florida governor said in a Facebook post Tuesday that he will `` actively explore '' running -- changes the dynamics of the race `` but not Marco 's thought process . '' Rubio has invited supporters to a Jan. 23-24 retreat in Miami Beach , where his top aides and donors could formalize his plans for 2016 . A run for president would be a big risk for Rubio , a 43-year-old former Florida House speaker who looks like a sure bet to win a second term in the Senate in 2016 . He 's making the moves of a presidential contender . Rubio campaigned with GOP candidates in the 2014 midterm election . He has a memoir set for release in January . And he 's working with incoming House Ways and Means Chairman Paul Ryan ( R-Wis. ) to craft health care legislation meant to be an alternative to Obamacare . He 's also been increasingly vocal on foreign policy issues -- potentially setting up a clash with leading Republican contenders like Kentucky Sen. Rand Paul , who has called for less U.S. intervention overseas . Rubio , though , would share one problem with Bush : He 's championed an overhaul of U.S. immigration laws , a position that has fallen out of favor with much of the GOP base .
A source close to Sen. Marco Rubio says he is on track to run for president in 2016 . This comes in the wake of mentor and former Gov . Jeb Bush saying he 's 'exploring a bid ' The source says Bush 's entrance changes the race 's dynamics 'but not Marco 's thought process '