House Minority Leader Nancy Pelosi is declining to endorse Sen. Bernie Sanders' universal healthcare bill.
The liberal California Democrat says that while she has long supported the idea the bill captures, of everybody getting health coverage, "Right now I'm protecting the Affordable Care Act."
She also disputes the idea that the Vermont independent's bill has become a litmus test for Democrats, forcing them to prove their ideological purity by getting onboard.
Several Senate Democrats who are seen as potential presidential candidates in 2020 have endorsed Sanders' bill, including Elizabeth Warren of Massachusetts and Cory Booker of New Jersey.
Sanders' bill would in effect expand Medicare to cover all Americans, not just the elderly.
Pelosi says President Barack Obama's Affordable Care Act is actually more comprehensive than Medicare.