Whether a state-law suit to enforce a bank’s contractual assumption of tax liabilities arises under federal law merely because the liabilities concern taxes connected to a national bank.
Holding
No. The collector’s claim arose under state contract law, not under the Constitution or laws of the United States.
Reasoning
Federal-question jurisdiction exists only when a right or immunity created by federal law is an essential element of the plaintiff’s own cause of action. The federal issue must be genuine and presently disputed, and the complaint must disclose it without relying on an answer, a removal petition, or an anticipated defense.
The obligation sued upon was the defendant bank’s contractual covenant to pay the old bank’s debts. That obligation had its source in Mississippi law. A promise, made for consideration, to pay another party’s debts can be enforced without invoking federal law; the complaint did not show that construing federal law was necessary to determine whether the contractual promise had been breached.
A federal question that may arise as a defense does not transform a state-law claim into a federal one. The defendant might contend, for example, that the tax was invalid under federal restrictions governing taxation of national banks. But possible federal defenses, even if important, cannot support removal under the well-pleaded-complaint rule.