Rubio says the White House is not reserved for the rich and powerful, and says he, the son of a bartender and a maid, has the same chance to serve as those who come from power and privilege.  Rubio's comments marked a contrast to two members of political dynasties who are likely rivals: Hillary Rodham Clinton, a Democrat and former secretary of state; and former Florida Gov. Jeb Bush, a Republican.  Rubio, a son of Cuban immigrants who rode the anti-establishment Tea Party wave of 2010 to national prominence, formally announced his presidential bid in a speech at Miami's Freedom Tower.  That is where thousands of Cuban exiles fleeing the communist-run island in the 1960s were first registered by U.S. authorities. Rubio is expected to make a muscular foreign policy a focal point of his campaign, portraying himself as the Republican most ready to handle threats to America in a chaotic world.  Read More The case for Rubio as the anti-Hillary  Rubio's support registers in single digits in opinion polls of the likely contenders in what is expected to be a crowded Republican presidential field. But aides believe Rubio, who was on 2012 nominee Mitt Romney's short list for vice president, will rise when voters take a closer look at him.  He is the third Republican to formally announce a White House bid, following Republican Senators Ted Cruz of Texas and Rand Paul of Kentucky.  During the campaign, Rubio probably will compete for donors and endorsements with his political mentor, former Florida Gov. Jeb Bush, who has been lining up support for a White House bid although he has not yet formally entered the race.
Sen. Marco Rubio announced his presidential bid to the public on Monday from Miami, marking the third official Republican campaign.