U.S. has already been abiding by provisions of UNCLOS for last two decades
We also should remember that the United States already has been abiding by the Law of the Sea Convention since President Reagan's 1983 Statement of Oceans Policy. In addition, the United States is a party to the 1958 Convention on the Territorial Sea and Contiguous Zone, a predecessor to the Law of the Sea Convention. Many of the provisions of the 1958 Convention are less advantageous to the United States than comparable provisions in the Law of the Sea Convention.
Given that the United States has been abiding by all but one provision of the Treaty for the last 21 years and that we are already a party to a less advantageous international agreement on ocean law, dire predictions about the hazards to our sovereignty of joining the Law of the Sea Convention ring particularly hollow.