Klobuchar calls Warren's health care plan 'a pipe dream'
NBC News talked to health experts who have researched the single-payer costs and financing options to weigh in on the dispute and help give a sense of what options Warren might have to finance her health care plan and how it compares to other plans.
Who wins under her plan?
Warren is correct that a yes/no question on whether middle-class taxes will go up doesn't fully explain the relative costs and benefits of Medicare for All.
Trimming health care expenses
The biggest issue with determining how much the federal government would have to tax and spend under Medicare for All is that expanding coverage to all Americans is only half of what it's designed to do.
Whose costs go down?
Warren says her goal is that total costs — taxes, medical expenses, premiums, the whole shebang — would go down for middle-class families once she works out the financing.