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Federal sentencing appeals

Henderson v. United States

Updated Oct 19, 2026

In brief

The Supreme Court overturned the Fifth Circuit’s ruling and sent Henderson’s case back, saying an error may be obvious if it was clear by the time of appeal.

Where it stands
Decided

Decided 6-3 · February 20, 2013 · Opinion by Justice Breyer

What it’s about
Armarcion Henderson challenged a sentence lengthened to give him time for a prison drug program, though he had not objected at sentencing; the Fifth Circuit found no plain error because the law was unsettled.
Who it affects
Appeals courts must judge whether a mistake was clear by the time of appeal, even if the law was unsettled when it happened.

Summary: written with AI from the case record.

Illustration for Armarcion D. Henderson v. United States
Conceptual illustration · AI-generated

What it's about

The Supreme Court overturned that ruling and sent the case back to the lower court (remanded), deciding an error can be “plain” under Rule 52(b) if it was clear by the time of appeal.

The dispute concerned how appeals courts review a possible mistake that a defendant did not object to at sentencing.

Question presented

1. Did the Fifth Circuit err when it held that Henderson did not preserve the error? 2. Did the Fifth Circuit err in holding that Henderson did not show plain error in his sentence?

What the Court decided

Holding

Regardless of whether a legal question was settled or unsettled at the time of trial, an error is “plain” within the meaning of Rule 52(b) so long as the error was plain at the time of appellate review. Pp. 3– 13. 646 F. 3d 223, reversed and remanded.

Result
Reversed

The Court's reasoning

The Court said an error may count as obvious even if the law was unsettled when the trial court acted, as long as the error was clear when the appeals court reviewed it.

The vote

  • Joined the judgment
  • Dissented
  • Wrote an opinion
Majority · 6joined the Court's opinion
  1. Breyerwrote the opinion
  2. Kagan
  3. Kennedy
  4. Ginsburg
  5. Sotomayor
  6. Roberts
Dissenting · 3disagreed with the result
  1. Thomas
  2. Scaliawrote the dissent
  3. Alito
6 justices joined the judgment, 3 dissented.

From the opinions

“When the law was unsettled at the time an error was committed, the error is not “plain” within the meaning of Federal Rule of Criminal Procedure 52(b).”

— Justice Scalia(dissent)

What's next

The Fifth Circuit must reconsider Henderson’s appeal using that timing rule. The Supreme Court did not order a particular change to his sentence.

Documents

2

Opinions

Audio

View the full docket on supremecourt.gov

Docket activity

10
  • New analysis added

    Oct 19, 2026 · Court records

  • AI analysis generated: Impact Analysis

    Oct 19, 2026 · Generated

  • New analysis added

    Oct 19, 2026 · Court records

  • AI analysis generated: Case Briefing

    Oct 19, 2026 · Generated

  • AI analysis generated: Opinion Summary

    Oct 19, 2026 · Generated

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  • AI analysis generated: Decision Record

    Oct 19, 2026 · Generated

  • Case data updated: summary, question_presented, generation_metadata

    Oct 19, 2026 · Court records

  • Case data updated: question_presented, extraction_metadata

    Oct 17, 2026 · Court records

  • Audio Recording added: Oral Arguments - Armarcion D. Henderson v. United States

    Oct 30, 2014 · Court records

  • Opinion added: Opinion

    Feb 20, 2013 · Court records

More questions

1
Why did the Fifth Circuit find no plain error?
It said the law was unsettled when Henderson was sentenced, so the mistake was not clear at that time.

Sources

Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.

Checked Oct 19, 2026Methodology

Court records and filings

Reporting and analysis