Louisville & Nashville Railroad v. Mottley
The Supreme Court threw out a lawsuit against a railroad not because either side asked it to, but because the Court decided on its own that the trial court never had authority to hear the case in the first place.
The ruling set the rule that a federal court can only hear a case as raising a federal question if the plaintiff's own claim is based on federal law -- not merely because the plaintiff expects the other side to raise a federal defense.
“It is not enough that the plaintiff alleges some anticipated defense to his cause of action and asserts that the defense is invalidated by some provision of the Constitution of the United States.”
States the core rule that anticipated defenses don't create federal jurisdiction.
How it got here: The couple sued in federal circuit court; the railroad's demurrer raised two legal questions, and the case reached the Supreme Court on appeal.
The Case in Depth
What happened
A couple had been injured in a railroad accident and settled their claims against the railroad by accepting a lifetime pass for free rail travel instead of money damages. Years later, a new federal law banned railroads from giving free passes or charging different fares than their published rates. When the railroad stopped honoring the passes, the couple sued to force the railroad to keep providing free transportation under their original settlement agreement.
The question before the Court
Could a federal court hear this railroad passenger's lawsuit just because she expected the railroad to raise a constitutional defense, even though her own claim was a simple breach-of-contract claim?
Why it matters
This decision shapes which cases can be filed in federal court versus state court to this day. Lawyers deciding where to sue must look only at the plaintiff's own claim, not at anticipated defenses, when deciding whether a case belongs in federal court -- a rule that affects how millions of lawsuits are routed through the court system.
What changes now
The case is sent back to the circuit court with instructions to dismiss it entirely for lack of jurisdiction, not to decide the underlying contract or constitutional dispute. The couple would need to refile in a court that actually has authority over their claim, most likely a state court, if they wanted to keep pursuing the railroad over the passes.
What this does not decide
The Court explicitly declined to decide whether the federal passenger-fare law made the couple's pass contract unlawful, or whether such a law would violate the Fifth Amendment. Those questions were left completely unresolved because the case was thrown out for lack of jurisdiction before ever reaching them.
How the Court got there
The legal reasoning, step by step
- The Court explained that it must check, on its own, whether the lower federal court had authority to hear the case at all, even though neither the couple nor the railroad had raised the issue.
- Because there was no diversity of citizenship between the parties, the only possible basis for federal jurisdiction was that the case counted as a suit 'arising under the Constitution and laws of the United States.'
- The Court described the settled rule for that phrase: a suit arises under federal law only when the plaintiff's own statement of their claim is itself based on federal law or the Constitution -- not when the plaintiff merely anticipates that the defendant will raise a federal defense.
- Applying that rule, the Court found that the couple's complaint was really about enforcing a contract for free rail passes; the only place federal law entered the picture was the couple's guess that the railroad would rely on the new federal passenger-fare statute as a defense.
- Because an anticipated defense does not turn an ordinary contract claim into a federal question, the Court concluded the lower court had no authority to hear the case in the first place.
Doctrinal impact
Cases affected by this decision
Reaffirms Metcalf v. Watertown (128 U. S. 586)
Relied on as the case that first announced the rule limiting federal jurisdiction to claims based on federal law.
Reaffirms Tennessee v. Union & Planters' Bank (152 U. S. 454)
Applied its rule that a defendant's anticipated federal defense doesn't create federal jurisdiction.
Reaffirms Boston & Montana Consolidated Copper & Silver Mining Company v. Montana Ore Purchasing Company (188 U. S. 632)
Followed its reasoning that a plaintiff can't manufacture federal jurisdiction by pleading around a defense.