Sen. Bernie Sanders, I-Vt., criticized the Republican tax plan at a Lansing, Michigan, rally over the weekend.

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He said the Republicans’ and Koch brothers’ agenda would raise the deficit over a 10-year period by $1.4 trillion and eventually result in cutting social service programs.

"Tax breaks for the rich, raise the deficit and then you go to the American people and say, 'Oh my god, the deficit is going up, we've got to cut Social Security, Medicare, Medicaid, education and nutrition programs'” Sanders said to supporters Sunday. "That is what their agenda is."

Sanders won the 2016 primary election in Michigan over Hillary Clinton by more than 1 percent of the vote before she lost the general election to Trump.