No. 25-7045October Term 2025Dismissed
Kenneth Robert Simpson v. United States
Kenneth Robert Simpson petitioned the Supreme Court after the Eighth Circuit upheld the revocation of his supervised release, a new sentence, and a new term of supervised release.
Case status
- Current stage
- Dismissed
- Latest event
- Dismissed
- Decision timing
- No window until argument is scheduled.
- What it's about
Kenneth Robert Simpson petitioned the Supreme Court after the Eighth Circuit upheld the revocation of his supervised release, a new sentence, and a new term of supervised release. He argues that the lower courts wrongly treated his constitutional challenge as an improper collateral attack on his original conviction and relied on impermissible factors when revoking and sentencing him.
Question presented
1. Whether a Constitutional challenge to the imposition of a new sentence on revocation constitutes, an “improperly raised collateral attack” on the underlying conviction and sentence? 2. Whether the district court relied on impermissible factors in revoking Mr. Simpson’s Supervised Release term, sentencing him , and imposing a new term of supervised release?
- Case path
United States Court of Appeals for the Eighth Circuit / Dismissed
- Area
Criminal Procedure
Briefing
What it's about
Kenneth Robert Simpson challenges the revocation of his supervised release (court-ordered monitoring after prison), his new sentence, and a new supervised-release term. He says the lower courts wrongly treated his constitutional claim as an attempt to reopen his original conviction and relied on improper factors.
Argument
No oral argument is scheduled. Simpson argues that his constitutional challenge should not be treated as an improper attempt to attack his original conviction and that improper factors affected the revocation and sentence.
Impact
The case concerns people whose supervised release is revoked and who receive new prison sentences or monitoring terms. For example, a person challenging a revocation could face limits on which constitutional arguments a court will consider.
What is the core dispute in Simpson v. United States?
Simpson says courts wrongly rejected his constitutional challenge to his new sentence and used improper factors when revoking supervised release.
Who could be affected by Simpson's case?
People whose supervised release is revoked could be affected. The case concerns what arguments and sentencing factors courts may consider in those proceedings.
What happens next in Simpson v. United States?
No oral argument is scheduled. The next development would be an argument date or another scheduling action from the Supreme Court.
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 3, 2026
- Method
- Methodology