In 1817, seeing the potential in a new technology, Cornelius Vanderbilt partnered with Thomas Gibbons in a steamship business, the Union Line. During his tenure with Gibbons, Vanderbilt learned how to manage a large commercial operation and became a quick study in legal matters. Gibbons was ferrying customers between New York and New Jersey, a clear violation of an 1808 state-sanctioned monopoly given to Robert Fulton and Robert Livingston. Aaron Ogden, who was operating Fulton and Livingston’s business and worked with Gibbons, sued the latter boatman for violating the monopoly. Vanderbilt and Gibbons hired Daniel Webster to defend their position. In Gibbons v. Ogden, the U.S. Supreme Court ruled in favor of Gibbons, stating the Constitution’s Commerce Clause gives Congress the exclusive authority to regulate interstate trade. Thus, it was unconstitutional for the New York legislature to give Ogden exclusive shipping rights.