U.S. law and practice are already in sync with the convention and would not need to change further

U.S. law and practice are already generally compatible with the Convention. Except [with respect to the enforcement of certain deep seabed mining decisions, which would be necessary at some point after U.S. accession], the United States does not need to enact new legislation to supplement or modify existing U.S. law, whether related to protection of the marine environment, human health, safety, maritime security, the conservation of natural resources, or other topics within the scope of the Convention. The United States, as a party, would be able to implement the Convention through existing laws, regulations, and practices (including enforcement practices), which are consistent with the Convention and which would not need to change in order for the United States to meet its Convention obligations….[t]he Convention would not create private rights of action or other enforceable rights in U.S. courts, apart from its provisions regarding privileges and immunities to be accorded to the Convention’s institutions.