 neighborhood drug trafficking ring and more calls for the Secret Service admin to step down. Those stories coming up after ABC News. It's currently 12 o'clock. From ABC News, I'm Michelle Franzen. After being diagnosed with COVID, the White House says President Biden is isolating at his home in Delaware. It comes as the president is facing growing calls now from top Democratic leaders, donors, and voters to step aside as the nominee. ABC's Jonathan Karl has more.