In Young v. Bryan et al., the United States Supreme Court ruled that a state court had no authority to issue an injunction against a federal officer in order to prevent him from executing his duties under federal law. The case arose when James Young, who was appointed as receiver of public moneys by the Secretary of War, sought an injunction from the Circuit Court for Georgia against William Bryan and others who were attempting to interfere with his performance of those duties. The Supreme Court held that since Congress alone has power over matters concerning national defense and other areas enumerated in Article I, Section 8 of the Constitution, it follows that any attempt by a state court or its officers to impede such activities is unconstitutional. As such, they concluded that Georgia's Circuit Court lacked jurisdiction over this matter and could not grant injunctive relief against Mr. Young or any other federal officer acting within their scope of duty on behalf of Congress

In Young v. Bryan et al., the Supreme Court was asked to decide whether a state court had jurisdiction over a case involving citizens of different states. Chief Justice John Marshall, writing for the dissenters, argued that it did not have such authority under the Constitution and that Congress should be responsible for deciding cases between citizens of different states in federal courts. He reasoned that since Article III grants exclusive judicial power to federal courts, any attempt by state courts to exercise this power would be unconstitutional. Furthermore, he noted that if each state were allowed to adjudicate disputes between its own citizens and those from other states then there could potentially be conflicting decisions on similar issues which would create chaos in interstate commerce and relations among the several States. Therefore, Marshall concluded that only Congress has been granted authority by Article III of the Constitution to establish uniform rules governing controversies between individuals from different States and thus only they can resolve these types of disputes through their creation of inferior tribunals or appellate review within their own system as provided for in Section 25th Amendment IV .