“Consistent with CDC guidance because he(Biden) is a close contact of the First Lady, he will mask for 10 days when indoors and in close proximity to others. We will also increase the President’s testing cadence and report those results,” the White House spokesperson said.
https://www.politico.com/news/2022/08/16...d-00052133
https://www.politico.com/news/2022/08/16...d-00052133