Ever since the 2016 election, Facebook has been under fire for allowing misinformation disguised as news. And time and again, the company has said it’s taking the problem seriously. But in a recent interview, founder Mark Zuckerberg dealt his own credibility on this issue a serious blow.

On this week’s edition of Beat the Press, Emily Rooney was joined by Adam Reilly of WGBH News, former CNN White House correspondent Dan Lothian, Dan Kennedy of Northeastern University and Lylah Alphonse of U.S. News & World Report.