The incoming president will be on a 10-day blitz to quickly roll back some of Trump's most controversial decisions.
President-elect Biden has pledged to build the most diverse government in modern history.
“Of course it would be better if we could start working with them,” Dr. Anthony Fauci said of Biden's presidential transition team.
Klain said the transition "is moving ahead,” despite President Donald Trump's refusal to concede.
President-elect Joe Biden has appointed his longtime adviser Ronald Klain as his White House chief of staff.
The longtime Democratic adviser is a consensus pick in the Democratic Party.
Ronald Klain also ripped the president's "bad decisions, bad leadership, bad coordination” in response to the coronavirus crisis.
"We’re not on a path to solve this problem, we’re on a path to make this problem worse," said Ronald Klain.
Dr. Ashish Jha said the U.S.’s haphazard response to the pandemic is “among the very worst in the world."
Ronald Klain warned that hospitals will be "crushed" as the number of cases soars.