The House and the Senate are no closer to agreement on immigration reform, but maybe we're making incremental progress on getting a little civility in the debate. Only a few days ago, anyone who wanted the president to enforce the law protecting the nation's borders was "a racist," "a bigot" or a "nativist." The president himself has sometimes thrown the word "nativist" around in the debate over immigration and, before that, in the controversy over outsourcing the security of the nation's ports to suspicious former enemies. "Nativist," like "Hitler," is the slur of the season when you're losing the argument....