It's US waters and the US coastguard, who are technically a branch of their military, would enforce it as far as the Titanic is concerned. I can see that happening after this for all but licenced science visits.
Not looking good at all. Very sad, but bad luck under 12500 feet of water rarely has good outcomes.
Did anyone e see the chap on the news yesterday? He'd paid a deposit for a visit to Titanic on this sub, but once he'd clapped eyes on it and saw how Heath Robinson, in his opinion, it was he asked for his money back. I'm not an expert on such matters but it seems to me a very clever design but possibly poorly executed.