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Kansas v. Garcia

Updated Sep 18, 2026

In brief

Kansas won: the Court said federal immigration law does not prevent the state from bringing these identity-theft and false-information prosecutions.

Where it stands
Decided

Decided 5-4 · March 3, 2020 · Opinion by Justice Thomas

What it’s about
Kansas prosecuted several unauthorized workers for identity theft and related state crimes after they used other people’s Social Security numbers on job and tax forms.
Who it affects
The ruling lets Kansas pursue these state criminal charges based on W-4 and K-4 tax forms, even when the same false Social Security number appeared on a federal I-9 employment form.

Summary: written with AI from the case record.

Illustration for Kansas v. Garcia
Conceptual illustration · AI-generated

What it's about

The case is about whether federal immigration law blocks states from bringing those prosecutions because the conduct overlaps with the federal employment-verification system.

The case addresses how far states may use their own criminal laws when conduct overlaps with the federal system for checking workers' authorization to work.

Question presented

1. Whether IRCA expressly preempts the States from using any information entered on or appended to a federal Form I-9, including common information such as name, date of birth, and social security number, in a prosecution of any person (citizen or alien) when that same, commonly used information also appears in non-IRCA documents, such as state tax forms, leases, and credit applications. 2. Whether the Immigration Reform and Control Act impliedly preempts Kansas's prosecution of Respondents?

What the Court decided

Holding

The Kansas statutes under which respondents were convicted are not expressly preempted. IRCA’s express preemption provision applies only to employers and those who recruit or refer prospective employees and is thus plainly inapplicable. The Kansas Supreme Court instead relied on §1324a(b)(5), which broadly restricts any use of an I– 9, information “contained in” an I–9, and any documents appended to an I–9, reasoning that respondents’ W–4’s and K–4’s used the same false Social Security numbers contained in their I–9’s. Respondents’ argument that Kansas’s laws are preempted by implication is also rejected. 306 Kan. 1113, 401 P. 3d 588 (first judgment); 306 Kan. 1100, 401 P. 3d 155 (second judgment); and 306 Kan. 1107, 401 P. 3d 159 (third judgment), reversed and remanded.

Result
Reversed

The vote

  • Joined the judgment
  • Dissented
  • Wrote an opinion
Majority · 5joined the Court's opinion
  1. Thomaswrote the opinion
  2. Kavanaugh
  3. Roberts
  4. Gorsuch
  5. Alitoalso wrote separately
Dissenting · 4disagreed with the result
  1. Breyerwrote the dissent
  2. Kagan
  3. Ginsburg
  4. Sotomayor
5 justices joined the judgment, 4 dissented.

From the opinions

“But I do not agree with the majority’s conclusion about implied preemption.”

— Justice Breyer(dissent)

What's next

The case returns to the Kansas Supreme Court to proceed under the Supreme Court's ruling. The Supreme Court has finished its work in this docket.

Why it matters

The Court rejected both a direct and an indirect claim that federal law blocked the prosecutions.

Documents

3

Docket activity

7
  • New analysis added

    Sep 18, 2026 · Court records

  • AI analysis generated: Case Briefing

    Sep 18, 2026 · Generated

  • AI analysis generated: Decision Record

    Sep 18, 2026 · Generated

  • New analysis added

    Jul 2, 2026 · Court records

  • Opinion added: opinion

    Mar 3, 2020 · Court records

Show 2 more
  • Brief added: Petition

    Dec 7, 2017 · Court records

  • Brief added: Questions Presented

    Court records

More questions

4
What did the Supreme Court decide in Kansas v. Garcia?
The Court overturned the Kansas Supreme Court and sent the cases back (reversed and remanded). It said federal immigration law did not block the Kansas criminal statutes.
Why were workers prosecuted in Kansas v. Garcia?
Kansas brought identity-theft and related charges after workers used other people's Social Security numbers on job and tax forms.
How did the justices split in Kansas v. Garcia?
Five justices joined Justice Alito's opinion. Justice Breyer agreed on direct federal blocking but disagreed that Kansas could proceed under the broader indirect-blocking analysis.
What happens next in Kansas v. Garcia?
The Kansas Supreme Court receives the cases again and must handle them under the Supreme Court's decision. The Supreme Court's docket action is complete.

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 Sep 18, 2026Methodology

Court records and filings

Reporting and analysis