I see Desantis re-opening the cruise industry like every other business he allowed to freely re-open long before he has the blessing of anyone else.
CDC can’t/doesn’t make laws!
All the ships are foreign documented outside the jurisdiction of the FED’s through the coast guard.
Bigger question is whether or not the cruises’ port of call will allow them in besides their own private islands. Surely those ports that rely on those cruises for their revenue are hurting badly and wanting them to resume.
The Coast Guard has authority over all ships embarking passengers in the US. However they don't oversee medical or health facilities, which aren't even required, or sanitary conditions which are under the prevue of the US Public Health Service. I'm not sure just how the CDC jumped in here. But the aforementioned agencies could probably exert their authority. In any case probably not a fight the cruise lines want. The best near term solution, to the extent they can operate outside the US.