This educational guide is based on the linked primary sources. It is not a Court publication, is not affiliated with the Court, and is not legal advice.
In brief
Overview
Background and question before the Court
Justice Breyer asked a question during oral argument.
Justice Alito asked whether the plain‑text interpretation would treat an employer’s employees as agents of the employer.
The United States filed an amicus curiae brief supporting the respondents.
According to United States (amicus curiae), according to United States (amicus curiae), the amicus argued that the Age Act expressly covers state and political‑subdivision employers regardless of size.
According to United States (amicus curiae), according to United States (amicus curiae), the amicus further argued that the phrase “also means” is used in federal statutes in its ordinary meaning, not following the Title VII approach.
What each side argues
Mount Lemmon Fire District (Petitioner)
Source-limited. The record does not yet support a complete account.
John Guido (Respondent)
Source-limited. The record does not yet support a complete account.
What happened at oral argument
During oral argument, Justices Breyer and Alito posed questions about the interpretation of the Age Act.
An amicus curiae brief filed by the United States supported the respondents.
According to United States (amicus curiae), according to United States (amicus curiae), the amicus brief argued that the Age Act covers state and political subdivision employers and that statutory language should be read in its ordinary meaning.
What the Court decided
Why it matters
Terms to know
No glossary terms are available for this guide.
Primary sources
Read the source materials on the official site or open the immutable repository copy used for this guide.
- 3ac65880f6edeec2eda3-r1-b06283e89b579f94.pdforal argument transcript
Guide generated September 26, 2026. Automated validation accepted this version.