The US state of Florida is suing the Biden administration in an effort to remove what has been essentially a government shutdown of America's cruise industry since March 2020.

The move targets the federal Centers for Disease Control and Prevention (CDC), which in late October imposed a so-called conditional sailing order restricting passengership operations in US territories.

Replacing an outright no sail order, it allows shipowners to apply for certification to enter US jurisdiction if they, among other things, carry out mock cruises and have on-board virus testing labs.