This is the description of the announcement published at 11:45, Wednesday, June 24th in the Guardian U.K..
Wondering how this is to be enforced as people from the restricted states are not the type to take this as a directive.
Subsequent info indicates the states expect this to work by residents asking newcomers if they’ve quarantined. Wow. I can see that working with Texans.
Here’s the latest: https://www.cnbc.com/2020/06/24/new-york-new-jersey-and-connecticut-impose-14-day-quarantine-on-travelers-from-coronavirus-hotspot-states.html
New York, New Jersey and Connecticut governors announce coronavirus travel restrictions
The governors of New York, New Jersey and Connecticut have announced they are enforcing new restrictions on those traveling from states with high levels of community spread of coronavirus.
New York governor Andrew Cuomo said starting at midnight tonight, anyone traveling from a state with a high level of community spread would have to quarantine for 14 days.

“A lot of people come into the region, and they could, literally, bring the infection with them,” Cuomo said at a briefing alongside Connecticut governor Ned Lamont and New Jersey governor Phil Murphy.
“I think it’s right, and I think it’s smart, and I’m glad we’re doing it together,” Cuomo added.