A Senior Adviser to President Biden, Anita Dunn, told CNN's Jake Tapper on "State of the Union" that public schools will "probably" re-open in the fall. On Friday, Biden said schools "should probably all be open" by the start of the next academic year. "He said 'probably.' He did not say 'absolutely,'" she said. "We've all seen this since unfortunately January of 2020. It's an unpredictable virus. And it is a virus that has -- you know it mutates. So we can't look in a crystal ball and say what September looks like."