Biden to address threats to democracy in Philadelphia speech. FDA authorizes Pfizer's and Moderna's updated Covid booster shots. Mike Lyons, military analyst, talks about the passing of Mikhail Gorbachev and the latest from Ukraine. Latest jobs report released. Los Angeles wants to force hotels to house homeless people when they have vacancies. Reading and math scores fell sharply during pandemic, data show. Learn more about your ad choices. Visit megaphone.fm/adchoices