The arrows are flying at Sen. Elizabeth Warren for claiming that her uber-expensive Medicare for All plan won’t raise taxes “one penny” on middle-class families.

"What she's claiming is just simply not true," says Adam Michel, senior policy analyst at The Heritage Foundation, a center-right think tank in Washington, D.C.

Warren’s plan, in fact, would raises taxes on all Americans, he advises, and it would also “roll back” business-friendly incentives that would impact jobs, too.

Medicare for All originated with Sen. Bernie Sanders, a chief rival for the Democratic nomination, who has vowed to eliminate health care insurers such as Aetna, Blue Cross/Blue Shield, and Humana, and replace them with government-run health insurance known as "single payer."

Warren unveiled her own far-left plan Nov. 1, estimating $20.5 trillion in new federal spending which supposedly comes from raising taxes on corporations and doubling taxes on super-wealthy billionaires.

But the plan has been criticized by rivals on the campaign trail, such as Joe Biden and Pete Buttigieg, and House Speaker Nancy Pelosi told the media she is “not a big fan” of Medicare for All.

Biden is on record saying he'd rather expand the Affordable Care Act to include a public option, and an ex-Biden adviser likens the Warren plan to trying to buy a unicorn with a unicorn.

Earlier this year, The Heritage Foundation released a report saying it was mathematically impossible to fund the progressive left's agenda by taxing the rich.

Medicare for All was factored into the Heritage report.

"Medicare for All is the biggest component of the progressive-left's agenda,” Michel tells OneNewsNow. "And the plan that Warren put out today demonstrates that it is, in fact, not possible to pay for all the things they're promising, or even a subset of them, without taxing middle-class Americans.”