On Wednesday, the United States reported its largest single-day increase in COVID-19 cases since the outbreak began.
Governors in some of the hardest hit states are scrambling to contain the virus.
North Carolina and Louisiana said they're not ready to move into the next phase of reopening.
Nevada will start requiring everyone to wear masks, including in casinos.
But New York, New Jersey, and Connecticut seem to have the virus under control.
The three states have implemented a travel advisory requiring visitors from nine states to self-quarantine for 14 days.
The advisory includes Arizona where ICU beds are nearly at capacity, and its a similar situation in Texas.
"People started to act like it was summer, they started to act like they wanted to go back to parties and it's coming back and it's biting us," said Dr. Marc Boom with Houston Methodist.
In California, Disneyland has delayed its reopening and the New York City marathon scheduled for November has been cancelled.