PBS News Hour S46 E190 September 23, 2021

Thursday on the NewsHour, the CDC approves a third dose of Pfizer's shot for Americans most vulnerable to developing severe cases of COVID-19. Then, a top U.S. diplomat resigns in protest of the Biden administration's "inhumane" treatment of Haitian immigrants. And, Justice Stephen Breyer shares his retirement considerations, and weighs in on concerns the U.S. Supreme Court is too political.