 Jeff Zients, the White Houses Covid-19 response czar, speaks during a press briefing at the White House where they spoke about a pause in issuing the Johnson Johnson Janssen Covid-19 vaccine on April 13, 2021, in Washington, DC. Brendan Smialowski AFP Getty Images Jeff Zients will serve as President Joe Bidens next ... Jeff Zients reportedly will be Bidens next chief of staff... 