In the 1899 case of Leovy v. United States, the U.S. Supreme Court ruled on a matter concerning maritime law and jurisdiction over crimes committed at sea. The defendant, Leovy, was accused of manslaughter while aboard a ship in Louisiana waters that were considered navigable but not high seas or tide water. He argued that federal courts did not have jurisdiction because the crime occurred within state territory rather than on "high seas" as specified by federal law for maritime cases to fall under their purview. The Supreme Court disagreed with this argument and upheld his conviction from lower court stating that Congress has authority to regulate commerce between states including navigation which extends to all vessels used for commercial purposes on waters forming connecting links between different states regardless if they are affected by tides or not. Thus, it concluded that such waters come under admiralty and maritime jurisdiction of United States courts even though they may be entirely within limits of a particular state - thereby affirming Federal Courts' right to try criminal offenses committed thereon.

The dissenting opinion in the Leovy v. United States case argued that the court had overstepped its boundaries by interfering with legislative power. The justice believed that it was not within the jurisdiction of the judiciary to determine whether or not a law passed by Congress was constitutional, as this would infringe upon separation of powers principles. They also contended that if a law is clear and unambiguous, courts should apply it as written rather than interpreting its meaning based on perceived intent or potential consequences. Furthermore, they disagreed with majority's interpretation of "high seas" in relation to piracy laws, arguing for a more literal understanding which excludes waters within any country's territorial jurisdiction.