OCTOBER TERM 1957 · DECIDED DECEMBER 9, 1957

355 U.S. 96

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Benanti v. United States

Reversed and remandedFinal ruling
wiretappingcriminal evidencefederal-state relationsprivacy law

Opinion of the Court by Justice Warren

The Supreme Court ruled that evidence from a wiretap conducted by state police officers, acting entirely under state law, still cannot be used in a federal criminal trial because a federal wiretapping statute flatly bars it.

The decision means a federal law banning the disclosure of wiretapped conversations applies no matter who did the tapping, closing off a way for federal prosecutions to benefit from wiretap evidence that state agents gathered on their own.

The essence of a provision forbidding the acquisition of evidence in a certain way is that not merely evidence so acquired shall not be used before the court, but that it shall not be used at all.
Justice Warren

Explaining why wiretap evidence barred by statute cannot be used at all, even indirectly.

How it got here: The defendant was convicted in federal district court; the Second Circuit affirmed; the Supreme Court agreed to review the case.

The Case in Depth

What happened

New York police, investigating suspected narcotics dealing, obtained a state court order to tap a bar's phone line. They overheard a conversation about "eleven pieces" being moved and used that tip to stop a car driven by the defendant's brother, finding cans of untaxed alcohol instead of narcotics. Federal authorities then prosecuted the defendant for illegal possession and transport of untaxed liquor, and the wiretap's existence came out during trial testimony.

The question before the Court

Can evidence from a wiretap placed by state police under state law, with no federal involvement, be used to convict someone in federal court?

Why it matters

Federal prosecutors can no longer use wiretap evidence gathered by state or local police to convict someone in federal court, even if federal agents had nothing to do with the tap. This closes a loophole that let federal cases rely on evidence federal agents themselves would have been barred from collecting directly.

What changes now

The case is sent back to the federal trial court for further proceedings that do not rely on the tainted wiretap evidence. This is a final decision on the legal question of whether Section 605 bars such evidence, though the underlying prosecution may continue using only evidence untainted by the wiretap disclosure.

What this does not decide

The Court did not decide any Fourth Amendment question about searches by state agents, expressly declining to reach that issue. It also left open whether an interception alone, without any divulgence, or a divulgence of a wiretap's fruits without revealing the conversation's existence, would violate Section 605.

Concurrences and dissents

How the Justices voted

Majority (1). Justice Warren (author).

How the Court got there

The legal reasoning, step by step

  1. The Court read Section 605 of the Federal Communications Act as an absolute ban on divulging the existence or contents of any intercepted wire communication to another person, without carving out any exception for who did the intercepting.
  2. Relying on its earlier rulings in the Nardone cases, which held that wiretap evidence gathered by federal agents could not be used in federal court, the Court found that courts may not create loopholes that defeat the statute's plain meaning.
  3. The Court distinguished Schwartz v. Texas, where similar wiretap evidence had been allowed in a state court, explaining that decision rested on respect for state evidence rules, not on any exception for state-gathered wiretaps used in federal court.
  4. Because this case involved a federal conviction, not a state evidence rule, the Court held the concern that justified admitting the evidence in Schwartz did not apply here.
  5. The Court also rejected the argument that Congress meant to let states authorize wiretapping free of Section 605's reach, reasoning that Congress's comprehensive scheme for regulating wire communications would be undermined if states could carve out exceptions Congress itself declined to create.
  6. Having found the statute violated once the existence of the wiretapped conversation was revealed to the jury, the Court concluded the evidence stemming from that wiretap could not support the federal conviction.

Doctrinal impact

Laws and provisions at issue

Section 605, Federal Communications Act

Federal law banning anyone from intercepting and revealing the contents of wire communications.

Cases affected by this decision

Reaffirms Nardone v. United States (302 U. S. 379)

The Court relied on this ruling that wiretap evidence gathered by federal agents cannot be used in federal court.

Distinguishes Schwartz v. Texas (344 U. S. 199)

The Court said this case, allowing wiretap evidence in state court, does not apply to federal convictions.

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Benanti v. United States | SCOTUS Reporter