Those decisions will be made by the governors. They are the ones who decided to close it down and issued the stay at home order and it will be governors who open it up again.
Thats true, but the smart governors (mostly Republican) are champing at the bit. Once Trump gives the thumbs up, that will give them political cover and they wont waste any time opening things back up.
That will put the Dummie governors under enormous pressure to follow suit, even though they dont want to.