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U.S. Supreme Court considers cases on immigration detention and Ten Commandments displays

The U.S. Supreme Court is weighing whether to hear cases involving mandatory immigration detention, prediction market regulations, and a Texas law mandating Ten Commandments displays in schools.

Background: How the Supreme Court takes a case

Published September 29, 2026 at 6:02 AM EDT

The short answer

The U.S. Supreme Court is weighing whether to hear cases involving mandatory immigration detention, prediction market regulations, and a Texas law mandating Ten Commandments displays in schools.

U.S. Supreme Court considers cases on immigration detention and Ten Commandments displays

The Facts

Who
U.S. Supreme Court justices, the Trump administration, Texas families, and prediction market operators including Kalshi and Polymarket.
What
The U.S. Supreme Court is deciding whether to add several cases to its docket for the term starting in October 2026. Key cases involve the Trump administration's immigration detention policy, the classification of prediction markets as gambling, and a Texas law requiring the Ten Commandments in public school classrooms.
When
Tuesday, September 29, 2026
Where
Washington, D.C.
Why
The outcomes will determine whether non-citizens can be detained without bond, whether online prediction markets face state gambling taxes and bans, and whether public schools in several states must display religious texts.

The U.S. Supreme Court is considering several cases for its upcoming term, including disputes over immigrant detention, prediction market regulations, and the display of the Ten Commandments in schools. The court’s nine-month term is scheduled to begin on Monday, Oct. 5, 2026. The justices are expected to announce this week which of these new cases they will add to a docket that already includes approximately two dozen granted cases.

The immigration case centers on a policy used during President Donald Trump's administration. Last year, U.S. Immigration and Customs Enforcement (ICE) adopted a position that non-U.S. citizens residing in the country, rather than just those arriving at the border, are "applicants for admission" subject to mandatory detention without bond hearings. The administration has asked the Supreme Court to endorse this policy, which has been rejected in nine of 11 decisions by federal appeals courts.

In a separate matter, the court may address whether prediction markets like Kalshi and Polymarket should be regulated as financial derivatives or as gambling. Market operators argue these platforms fall under the jurisdiction of the Commodity Futures Trading Commission. However, a bipartisan group of states contends the sports-related contracts on these platforms constitute gambling and should be subject to state sports betting laws, taxes, and licensing regimes.

The court is also mulling a challenge to a 2025 Texas law that mandates the display of the Ten Commandments in every public school classroom. Families backed by the American Civil Liberties Union (ACLU) appealed to the Supreme Court after the 5th U.S. Circuit Court of Appeals upheld the law. While a 1980 Supreme Court ruling struck down a similar Kentucky statute, a 2022 decision involving a high school football coach established a new legal framework that the 5th Circuit applied to uphold the Texas mandate.

The prediction market case involves a wide range of stakeholders, including 50 states, Native American tribes, casinos, and multi-billion-dollar financial exchanges. If the court classifies these markets as gambling, operators would face a complex patchwork of state-level criminal statutes, licensing fees, and taxes. This could impact users of platforms such as Crypto.com and Robinhood, which have expanded into these event contracts. Conversely, a ruling that they are derivatives would centralize regulation under federal oversight.

In the education and religious sectors, the ruling on the Ten Commandments will determine the requirements for thousands of public school classrooms in Texas and potentially other states. Republican-led legislatures in Louisiana, Arkansas, and Alabama have passed similar requirements. For families and students in these states, the outcome will define the boundaries of religious expression and state mandates in public schools. The Supreme Court's session begins Oct. 5, 2026, with the justices expected to issue orders on which cases to hear in the days leading up to the start of the term.

Timeline of what happened

Key dates and decisions, in the order they occurred.

  1. November 17, 1980

    Supreme Court strikes down Kentucky Ten Commandments law in Stone v. Graham

  2. June 27, 2022

    Supreme Court sides with football coach in prayer case, altering religious legal framework

  3. June 26, 2025

    Texas mandates Ten Commandments displays in public schools

  4. June 26, 2026

    Trump administration asks Supreme Court to endorse immigration detention policy

  5. September 29, 2026

    Justices expected to announce new case grants ahead of October term

  6. October 5, 2026

    Supreme Court nine-month term begins

Summaries are written by The Plain Record to state the facts of a story plainly and without political slant. Drafted with AI assistance and checked against the source record before publication. See how we report, or report a correction.

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Questions readers ask

What happened: U.S. Supreme Court considers cases on immigration detention and Ten Commandments displays?

The U.S. Supreme Court is deciding whether to add several cases to its docket for the term starting in October 2026. Key cases involve the Trump administration's immigration detention policy, the classification of prediction markets as gambling, and a Texas law requiring the Ten Commandments in public school classrooms.

Who is involved?

U.S. Supreme Court justices, the Trump administration, Texas families, and prediction market operators including Kalshi and Polymarket.

When did this happen?

Tuesday, September 29, 2026

Where did this happen?

Washington, D.C.

Why does this matter?

The outcomes will determine whether non-citizens can be detained without bond, whether online prediction markets face state gambling taxes and bans, and whether public schools in several states must display religious texts.