Coronavirus task force member Dr. Anthony Fauci issued a stark warning on Tuesday to lawmakers on Capitol Hill, telling them he wouldn’t be surprised if the US sees new cases of coronavirus rising to a level of 100,000 a day.

Fauci and US Centers for Disease Control and Prevention Director Dr. Robert Redfield stressed the importance of wearing masks during testimony before a Senate committee on Tuesday, with Fauci saying “we recommend masks for everyone” and “masks are extremely important.”

Fauci indicated that he would support an effort to increase the production of high-quality masks in the US and distribute them free of charge to the American public in response to a question from Vermont independent Sen. Bernie Sanders.

Dr. Stephen Hahn, commissioner of the US Food and Drug Administration, said the FDA is taking action to help coronavirus vaccine developers get through the approval process faster.

Fauci and Redfield testified before lawmakers last week, when Fauci said “we’re going to be doing more testing, not less,” in response to President Donald Trump’s recent claim that he asked his administration to slow down testing during the pandemic.