MIAMI — Fighting for Florida and beyond, Hillary Clinton and Bernie Sanders tangled in an intense debate Wednesday night over who’s the true friend of American Hispanics, trading accusations over guest worker programs “akin to slavery” and the embracing of “vigilantes” against immigrants. They had even worse things to say about Republican front-runner Donald Trump. Facing off just six days before Florida gives its verdict on the presidential race, Clinton faulted Sanders for repeatedly voting against a 2007 comprehensive immigration reform bill; he faulted her for opposing a 2007 effort to let people who were in the country illegally obtain driver’s licenses. Had the immigration package passed back then, Clinton said, “a lot of the issues we are still discussing today would be in the rearview mirror.” Sanders retorted that he opposed the legislation because it included a guest worker program “akin to slavery.” The debate opened with a question that appeared to startle Clinton. Univision’s Jorge Ramos asked her if she would drop out of the race if indicted over the handling of her email while secretary of state. “Oh for goodness, that is not going to happen,” Clinton declared.