Illinois v. Gates Et Ux.
The Supreme Court ordered the parties in a Fourth Amendment search-warrant case to come back and argue a brand-new question: whether courts should stop throwing out evidence when police reasonably believed their search was lawful, even if it later turns out it wasn't.
Three justices dissented, objecting that the Court had refused to let Illinois raise this very question just months earlier, and warning that reversing course mid-case raised troubling questions about the Court's own consistency and the limits of its power to decide issues never raised in the lower courts.
How it got here: The Illinois Supreme Court ruled a search warrant invalid; Illinois sought Supreme Court review, and after argument the Court ordered a second round of argument on a new question.
The Case in Depth
What happened
The case involved an Illinois search warrant that led to evidence used against a criminal defendant. The Illinois Supreme Court had ruled the warrant invalid under the Fourth Amendment because the police affidavit supporting it was insufficient. Illinois asked the U.S. Supreme Court to review that ruling and also, separately, asked to add a new argument about a good-faith exception to the exclusionary rule.
The question before the Court
Should the Supreme Court have the parties reargue a search-warrant case to address whether police who reasonably but mistakenly believed a search was lawful should still lose the evidence?
Why it matters
This order signaled the Court might create a 'good-faith' exception to the rule that illegally obtained evidence must be excluded from criminal trials — a change that would affect how police obtain warrants and how courts handle evidence nationwide. The unusual move to add a new question after argument also drew criticism over fair notice to litigants and the Court's own procedural consistency.
What changes now
The case was scheduled for a second round of oral argument so the parties could address the newly added question about a good-faith exception to the exclusionary rule. This order does not decide the underlying Fourth Amendment dispute or announce any new rule; it is purely procedural, teeing up further argument before the Court issues its eventual merits decision.
What this does not decide
This order does not decide whether the search warrant was valid, whether the evidence should be excluded, or whether a good-faith exception to the exclusionary rule should exist. It only directs the parties to argue that additional question in a further round of briefing and argument.
Concurrences and dissents
Dissent — Justice Stevens
Justice Stevens objected to the Court ordering reargument on a question it had refused to let Illinois raise just months earlier. He argued this inconsistency wastes judicial resources, violates the practice against deciding issues never presented to the lower courts, and raises serious doubts about whether the Court even has the power to reach a question that was never properly raised in the litigation.
How the Court got there
The legal reasoning, step by step
- The order itself does not resolve any legal question; it simply directs the parties to brief and argue an additional issue beyond the one originally presented in the certiorari petition.
- The dissent's core legal objection rests on the principle that parties generally cannot raise a ground for reversal that was never presented to the lower courts, since the record was not developed with that issue in mind.
- The dissent also invokes the settled rule that courts avoid deciding constitutional questions unless necessary to resolve the actual case before them, meaning the Court could resolve the original Fourth Amendment question without reaching the new good-faith issue at all.
- The dissent frames the Court's move as raising a structural concern: without a properly raised federal question, the Court's own jurisdictional statutes give it no authority to reach out and decide additional issues on its own initiative.