Marco Rubio

But he still lags far behind rivals Donald Trump and Ted Cruz.

The debate was the candidates' first face-to-face gathering since Super Tuesday nominating contests this week gave extra momentum to Trump but did not knock out his rivals.

Republican presidential hopeful Marco Rubio has no plans to allow a vote on President Barack Obama's nominee to be ambassador to Mexico.

Mexico plans to use its extensive network of U.S. consulates to highlight the benefits of U.S.-Mexican relations to the U.S. economy and the American people.

El precandidato republicano explicó ante electores de Minneapolis el caso del ex gobernador de Minnesota, Jesse Ventura, del que dijo: "fue una vergüenza"

Interviews with migrants, people smugglers and officials show many migrants are trying to cross now instead of facing tighter policing and new policies to halt illegal immigration if Trump wins the Nov. 8 election.

Trump unapologetically bashed protesters at one of his rallies in Radford after he was interrupted during a speech about illegal immigration and Mexico. "Are you from Mexico?" Trump shouted from the stage.

Republicanos Rubio y Cruz publican declaraciones fiscales; retan al magnate a hacerlo; critican al empresario por negarse a condenar respaldo que le dio el Ku Klux Klan

The Florida senator grinned when a man yelled, "Viva la Constitution!"

Failure to defend their turf could leave each explaining what states they can win going forward - and make Donald Trump look all the more inevitable.