What was the effect of the Marshall Court's decision in McCulloch v. Maryland and Cohens v. Virginia and Gibbons v. Ogden decisions had on the federal government?

As a Federalist, Marshall exerted great influence over the other members of the Court to support federal supremacy over state sovereignty. The Supreme Court's decisions in the named cases prevented the states from subordinating the federal government to state laws.

Some of these cases rested on the implied powers of Congress, rather than the enumerated powers; others rested on interpretation of enumerated powers, such as the Interstate Commerce Clause and its application.

In these cases, the Supreme Court's decisions set a precedent allowing the Legislative Branch to exercise "implied powers," in addition to the expressed powers listed in Article I of the Constitution. Both cases exercised the interstate commerce clause of Article I, and both relied on the Article VI Supremacy Clause. Chief Justice John Marshall's opinions transferred some of the power traditionally held by the states to the Federal government.