No. 21-1158October Term 2022Decided May 11, 2023
Joseph Percoco, Petitioner v. United States, et al.
A private citizen's informal influence over government decisions cannot be judged under the Second Circuit's Margiotta jury instruction.
Case status
- Current stage
- Decided
- Latest event
- Decision released May 11, 2023
- What it's about
The Court unanimously ruled for Percoco, holding that the jury instructions used to decide whether a private citizen owed the public honest services were too vague. It reversed the Second Circuit’s judgment and sent the case back for further proceedings.
Question presented
Whether a private citizen who can exercise "de facto control" over government decisions owes a fiduciary duty to the public and can be convicted of honest-services fraud.
- Case path
United States Court of Appeals for the Second Circuit / Decision released May 11, 2023
- Area
Decided Supreme Court case
Briefing
What it's about
The Supreme Court unanimously ruled that the jury received an incorrect legal instruction for deciding when a private citizen owes the public honest services. The Court reversed the Second Circuit and sent Percoco's case back for further proceedings.
Vote
The Court ruled 9-0 in an opinion by Justice Samuel A. Alito Jr. Chief Justice John G. Roberts Jr. and Justices Sonia Sotomayor, Elena Kagan, Brett M. Kavanaugh, Amy Coney Barrett, and Ketanji Brown Jackson joined; Justice Neil Gorsuch wrote a concurrence, joined by Justice Clarence Thomas.
“The Court said it was error to instruct the jury using the Second Circuit's Margiotta standard for when a private citizen owes the government honest services.”
Impact
The decision limits the use of a rule that treated informal political influence or “de facto control” as enough to create a public duty. It affects private people who advise or influence government officials and prosecutors pursuing honest-services fraud cases.
What's next
The case returns to the lower courts, which must apply the Supreme Court's decision in further proceedings. Prosecutors and courts must account for the rejected instruction in similar honest-services fraud cases.
What did the Supreme Court rule in Percoco?
The Court unanimously rejected the jury instruction based on the Second Circuit's Margiotta standard and sent the case back to the lower courts.
Who is affected by the Percoco decision?
Private individuals with informal influence over government and prosecutors bringing honest-services fraud cases are directly affected by the decision.
What happens next in Percoco?
The lower courts will reconsider the case under the Supreme Court's decision. Further proceedings must not rely on the rejected jury instruction.
Decision
What the Court decided
A private citizen's informal influence over government decisions cannot be judged under the Second Circuit's Margiotta jury instruction.
- Result
- Reversed
Impact
This affects private citizens with informal influence over government decisions. Honest-services fraud (a crime involving a duty of honest services) cannot rest on vague instructions. For example, someone called politically influential cannot be convicted merely under “special relationship” and “dominated” standards. Next, courts must use a more definite standard when deciding whether private influence creates a public duty. The Court reversed Percoco’s conviction and sent the case back for further proceedings.
Not official Court text.
Vote
- Vote split
- 9-0
- Majority author
- Samuel A. Alito, Jr.
Majority
- Samuel A. Alito, Jr.(author)
- John G. Roberts, Jr.
- Sonia Sotomayor
- Elena Kagan
- Brett M. Kavanaugh
- Amy Coney Barrett
- Ketanji Brown Jackson
- Neil Gorsuch(concurring, author)
- Clarence Thomas(concurring)
Opinion documents
Timing
Decided May 11, 2023
The Court released its decision 164 days after oral argument on November 28, 2022. The median for cases argued in November is 160 days.
Related cases




Grounding
- Grounding
- Primary materials plus reporting.
- Note
- Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.
- Checked
- Sep 5, 2026
- Method
- Methodology
Primary materials10
Supreme Court docket 21-1158
docket | Sep 5, 2026
Primary case document
Supreme Court document | Sep 5, 2026
CourtListener docket record
docket | Sep 5, 2026
Questions Presented
brief | Apr 3, 2026
opinion
opinion | May 11, 2023
Petition
brief | Feb 17, 2022
SupremeCourt.gov
official | Sep 5, 2026
SupremeCourt.gov
official | Sep 5, 2026
SupremeCourt.gov
official | Sep 5, 2026
SupremeCourt.gov
official | Sep 5, 2026