50 C.F.R. § 38.7
Any person who commits any act or omission on Midway Atoll National Wildlife Refuge which, although not made punishable by an enactment of Congress, would be punishable if committed within the United States under the United States criminal code at the time of such act or omission, including any provisions of the United States criminal code that are not specifically applied to unincorporated possessions of the United States, will be guilty of a like offense and subject to like punishment. Any person who commits any act or omission on Midway Atoll National Wildlife Refuge which, although not made punishable by an enactment of Congress, would be punishable if committed within the State of Hawaii by the laws thereof at the time of such act or omission, will be guilty of a like offense and subject to like punishment to the extent the laws of the State of Hawaii do not conflict with the criminal laws of the United States.
50 C.F.R. § 38.7