"Joe Biden is attacking Medicare for All with lies straight out of the playbook of Donald Trump, Mitch McConnell and the health insurance industry," Sanders' campaign website reads.
"I'm proud to be working with @AOC and so many other Democrats to pass Medicare for All, debt free college and a Green New Deal," Sanders tweeted.
"When you say they're going to repeal and replace your health insurance that you get from your employer..." Outnumbered co-anchor Mellissa Francis said, "when you say that, wow!"
A poll released by Fox News last October showed that the majority of Americans approved of the Affordable Care Act, despite Republican efforts to repeal the legislation.
Polls suggest that progressive policies such as the Green New Deal and Medicare-for-all are actually in line with what the majority of American citizens want their elected lawmakers to support.
Alexandria Ocasio-Cortez questioned why the GOP seems to "write unlimited blank checks for war" or to fund the Trump administration's signature tax cuts.