To amend title 10, United States Code, to expand certain restrictions relating to the overhaul and repair of vessels in foreign shipyards to the Commonwealth of the Northern Mariana Islands.

Prohibits a naval vessel (or any other vessel under the jurisdiction of the Secretary of the Navy) that has its home port in the United States, Guam, or the Commonwealth of the Northern Mariana Islands from being overhauled, repaired, or maintained in a shipyard outside the United States, Guam, or the Commonwealth of the Northern Mariana Islands, except for voyage repairs. (Under current law, the prohibition does not cover a naval vessel with a home port in the Commonwealth of the Northern Mariana Islands.)