President Joe Biden is expected to appoint Jeff Zients, the Covid czar for the first part of the administration, as White House Chief of Staff to replace Ron Klain. Summary President Joe Biden is expected to appoint Jeff Zients, who served as Covid-19 response coordinator during the first few months of the administration, as White House Chief of Staff to replace Ron Klain after he departs the administration in the coming weeks. Zients coordinated the administration’s Covid-19 policy response from …