CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

Pearson v. Callahan

2009 United States Supreme Court case

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 1, 2026
Entity authorityQ7158379 ↗
Source-derived summary

Pearson v. Callahan, 555 U.S. 223 (2009), was a case decided by the United States Supreme Court dealing with the doctrine of qualified immunity.

The case centered on the application of mandatory sequencing in determining qualified immunity as set by the 2001 decision, Saucier v. Katz, in which courts were to first ask whether a constitutional right was clearly violated by a government official at the time of the action before evaluating if a law had clearly been broken. The Court took to the unusual step of asking the parties to argue whether past precedent should be overturned. The theory under Saucier is that without courts first ruling on constitutional questions, the law would go undeveloped in many areas. Many legal commentators have criticized the ruling in Saucier.

The Supreme Court, in its opinion, withdrew the mandatory sequencing required under Saucier, giving courts the discretion of asking the constitutional or law question first. While this discretionary approach can free resources of the court, it has led to additional criticism, as it can often favor defendants, particularly in cases involving excessive force and police brutality.

Background

In 2002, a confidential police informant working with five officers from the Central Utah Narcotics Task Force went undercover at the Fillmore, Utah mobile home of a suspected drug dealer, Afton D. Callahan, to purchase $100 worth of methamphetamine.

Editorial summary

“Pearson v. Callahan” enters the record as 2009 United States Supreme Court case. Crown Archives preserves that source wording while asking what Pearson, Callahan and United can confirm, complicate or overturn.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—2009, 2001, 2002—that can be checked directly. The linked authority record independently contributes the date 2009-01-21. Its strongest next move is a source search built around Pearson, Callahan and United.
Editorial analysis

Why this record matters

“Pearson v. Callahan” is worth following because a concise public description often conceals a longer documentary argument. Here, Pearson, Callahan and United provides the most credible route into that argument.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated May 1, 2026. The linked authority identifier is Q7158379. None of the 1 selected statements returned an explicit reference. The first chronological checks are 2009, 2001 and 2002.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Pearson v. Callahan”, its source revision and the description used here.
  2. Expand the search: follow Pearson v. Callahan primary sources, Pearson v. Callahan archive and Pearson research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Pearson v. Callahan”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Pearson v. Callahan” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.