It determined that only the federal government could regulate interstate commerce.
The case of Gibbons v. Ogden regarded the interstate shipping trade and whether or not the states could regulate or if it was Congress's job to regulate.
The decision from the Marshall Court stated it was the job of Congress under the Commerce Clause to regulate trade between states to include shipping. New York was not able to regulate the trade taking place in the waterways between states. One of the justices included in a supporting decision that the federal interstate laws superseded the state laws and the federal government was the ultimate power on interstate trade.
