Welcome aboard SCOTUS Express, the only airline where you do not pick the destination and the destination does not pick you either. On September 29, the Supreme Court voted 6-3 to let the Trump administration keep carrying out third-country deportations while the legal challenge against the policy proceeds. The justices also agreed to hear the case in full in December. Until then, the flights continue.

Third-country deportation means what it sounds like. Migrants with final removal orders are sent to a country that is not their home country, often a country where they have no ties, no citizenship, and no history. The government says the tool is essential when home countries refuse to accept deportees or when removals cannot otherwise be completed. The policy has been used to send more than 25,000 people to at least 29 countries, with most going to Mexico and others to countries in Africa and Latin America, including South Sudan, Uganda, and Liberia.

The legal fight is about process. A federal district court in Boston ruled in February that failing to give migrants a meaningful chance to contest the risk of persecution or torture in a third country violates immigration law and constitutional due process. An appeals court upheld much of that ruling. The Supreme Court's September 29 order pauses those lower-court rulings without deciding the merits. The three liberal justices dissented.

What the Court will decide in December is bigger than one flight manifest. The justices asked both sides to argue whether lower courts had the authority to issue nationwide relief blocking the program, whether the policy itself is lawful, and whether it violates due process protections or conventions against torture. That is the full merits case, and it will set the rules for every third-country removal that follows.

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For now, the departure board is the whole story. The government calls third-country removal an essential enforcement tool. Critics call it a one-way ticket to a country the passenger never chose. Both sides agree on one thing: the plane is already in the air. Your destination: wherever. No refunds. Boarding Group Z: habeas.

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