Health officials across the US have expressed growing concern about the nation's ability and willingness to slow or end the coronavirus pandemic.
A Centers for Disease Control and Prevention expert on Monday said the US has way too much virus to control.
The principal deputy director of the CDC warned that the US is not responding like other countries which have shown success in containing the coronavirus, and has allowed the virus to spread much more widely and rapidly.
Many US states have paused reopenings as their infection caseloads balloon.
On Tuesday, cases rose by more than 40,000.
The CNN reported that the surge - which is occurring in southern and western states - has forced at least 16 states to pause or reverse their reopening plans.
For some, the new measures come over a month after they first began to reopen their economies.
The US has now recorded close to 2.7 million confirmed cases of coronavirus and 129,544 deaths.