As Hillary Clinton rolled out her running mate Tim Kaine in Miami Saturday, erstwhile VP pick contender Elizabeth Warren was also in Florida, slamming Donald Trump's "stupid wall" at the National Council of La Raza conference in Orlando.The Massachusetts senator drew a clear divide between Trump and the country's Hispanic population, telling attendees that Hispanics were disproportionately hit by the 2008 housing crisis while accusing the Republican nominee of profiting from it.