Don't forget Titanic was only registered in Great Britain, she was owned by the American International Mercantile Marine Co (IMM). In 1994 RMS Titanic Inc became the salvor-in-possession under international conventions on salvage. The is a bilateral agreement between the US and UK to protect the fabric of the wreck made in 1993 and ratified only in 2020, and the site was listed as a UNESCO protected underwater cultural site in 2012 (once it became eligible after 100 years). All of which is too tedious (and off topic) to explain in any more detail here!
Will