Howard Dean: Hillary Clinton Has Been Completely Truthful - This Is An Attempt By Republicans to Smear the Frontrunner

DEAN on NBC: "This is nothing but a partisan witch hunt"

Former Vermont Gov. Howard Dean, the former chair of the Democratic National Committee, tells Matt Lauer that the Justice Department investigation of Hillary Clinton's email server will show "no criminality" and that her Republican rivals are attempting to "smear the frontrunner early on."