A bill to facilitate the enforcement by the Coast Guard of laws relating to the importation of marihuana, cocaine, and heroin, and for other purposes.

Makes it unlawful for any person on board a vessel of the United States on the high seas, or for any citizen of the United States on board a foreign vessel on the high seas, to knowingly or intentionally possess with intent to distribute or dispense marihuana, cocaine, or heroin, unless such substance is part of the cargo entered in the manifest or part of the official supplies of the vessel.