Pres. Joe Biden challenged Republicans to test his new vaccine requirements in court as he stressed his administration's commitment to keeping students safe when he visited a Washington, DC, middle school on Friday. Biden addressed criticism from Republicans, including several governors, who say his new plan amounts to government overreach and that they plan to challenge it in court. The Republican National Committee has said it plans to sue the administration over the stringent new measures. "Have at it. Look, I am so disappointed that, particularly some of the Republican governors have been so cavalier with the health of these kids, so cavalier with the health of their communities," Biden said. For perspective on the actions, and the GOP reaction, Dr. Jerome Adams, who served as U.S. Surgeon General under President Trump and Robert Reich, a Clinton-era Secretary of Labor, the Department that is drafting the business rules for the mandate, join the program.  Plus, in just four days the final votes will be cast in the California recall election. Former California Governor Jerry Brown joins AC360 to discuss the race. Date: September 10, 2021   Guests: Jerome Adams Robert Reich Jerry Brown   To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices