In Catlett v. Brodie, the Supreme Court of the United States ruled that a state court had no jurisdiction to issue an injunction against a federal officer acting within his authority under federal law. The case arose when William Catlett, a collector of customs in Maryland, attempted to seize goods from John Brodie for non-payment of duties owed on imported merchandise. In response, Brodie obtained an injunction from the Circuit Court of Baltimore County prohibiting Catlett from seizing any property until further order by that court. The Supreme Court held that this was improper because it interfered with and restrained an officer appointed by Congress and acting pursuant to its laws; thus only Congress could direct or control such officers in their official capacity. This decision established important precedent regarding separation of powers between state and federal governments as well as limitations on judicial interference with executive branch activities authorized by Congress.

In Catlett v. Brodie, Chief Justice John Marshall delivered the dissenting opinion of the Supreme Court. He argued that a contract between two parties should be enforced according to its terms and conditions, even if one party had acted in bad faith or with fraudulent intent. The majority opinion held that such contracts were voidable due to fraud; however, Marshall believed this would lead to an unjust result for innocent third-party creditors who relied on the validity of these contracts when extending credit or other forms of assistance. He further noted that allowing such contracts to be voided could create uncertainty in business transactions and ultimately harm commerce as a whole by discouraging people from entering into agreements with each other out of fear their efforts may not be rewarded fairly if they are later found guilty of fraud or deceitful behavior. In conclusion, he concluded that while it was important for courts to protect individuals against fraudsters, it was equally important not to punish those who had entered into valid agreements without knowledge or suspicion of any wrongdoing on either side's part.