But PolitiFact Wisconsin found that number is a broad estimate that does not take into account tax planning or charitable donations.
Sanders also left out one other key point
"Trump has proposed, besides eliminating the estate tax, increasing the capital gains tax," Kertscher said. "So that would likely mean tens of billions of dollars in taxes that the Walton Family would have to pay."
PolitiFact rated Sander's claim Half True.
Donald Trump making this statement about Hillary Clinton in Wednesday's debate