Bernie Sanders defends unionized staffers' salaries amid clash with campaign over guarantee of $15 an hour

Sen. Bernie Sanders is a staple on the front lines of the labor fight, leading the charge in Washington and around the country to raise the minimum wage for workers to $15 an hour. But within his own campaign, which unionized earlier this year, tense discussions over pay have spilled out into public view.
The dispute threatens to undermine Sanders' political message and, if it were to escalate, his ability to credibly advocate for workers around the country currently engaged in their own struggles to negotiate higher wages and better working conditions.