Sen. Bernie Sanders (I-Vt.) strongly pushed back against Starbucks chairman Howard Schultz’s argument—heard for years from centrist Democrats and Republicans, despite a wealth of evidence to the contrary—that a Medicare for All system would be prohibitively expensive for the United States and is not a “realistic” proposal.

“I think his comment is dead wrong,” Sanders told Chris Cuomo on CNN Thursday night. “You have a guy who thinks that the United States apparently should remain the only major country on earth not to guarantee healthcare to all people.”

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Schultz’s comments came days after he announced he would step down as chairman of his $23 billion international coffee chain, fueling rumors that he may run for president in 2020.  

“It concerns me that so many voices within the Democratic Party are going so far to the left,” Schultz, who has been a major Democratic donor, told CNBC on Tuesday. “I say to myself, ‘How are we going to pay for these things,’ in terms of things like single payer, people espousing the fact that the government is going to give everyone a job. I don’t think that’s something realistic. I think we got to get away from these falsehoods and start talking about the truth and not false promises.”

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