President Biden on Thursday called on social media companies to step up their censorship of Americans as it relates to Covid-19 misinformation.

The comment came at the end of remarks about the White House’s plan to order more Covid-19 tests and distribute free masks.

“I make a special appeal to social media companies and media outlets: Please deal with the misinformation and disinformation that is on your shows,” the President said. “It has to stop. Covid 19 is one of the most formidable enemies America has ever faced. We have got to work together, not against each other.”