- Gibbons's lawyers- William Wirt and Daniel Webster
- Ogden's lawyers- Thomas Addis Emmet and Thomas J. Oakley
Ogden thought that state governments should control state trade. However, Gibbons believed that the national government had power over state trade. This was an important issue, because people had disagreed about it for a long time.
Statue of Chief Justice John Marshall
Chief Justice John Marshall was in charge of the court. To make a decision, he reviewed the Commerce Clause in the Constitution.