The Supreme Court has agreed to hear a case that will determine whether undocumented immigrants already living in the United States have a legal right to a bond hearing while fighting deportation. The case arrives as the court's new term opens Monday, placing immigration detention policy at the center of the docket. At stake is a July 2025 policy directive requiring federal immigration authorities to hold undocumented immigrants without bond hearings for the entire duration of their deportation proceedings — proceedings that can stretch for years. The policy reversed decades of practice under which some immigrants could appear before a judge who would decide whether they posed a flight risk or danger, and release them on bond if they did not. The case stems from the arrest of Ricardo Aparecido Barbosa da Cunha, a Brazilian national who had lived in the US since approximately 2004 or 2005. Immigration officers detained him in September 2025 while he was driving to work in Massachusetts. He was initially denied a bond hearing under the new policy but was later released on bond after a court challenge. The 2nd US Circuit Court of Appeals ruled in his favor. The circuit split is clean. Most federal appeals courts have ruled that immigrants cannot be detained without a bond hearing. The 5th and 8th Circuits disagree, holding that immigrants accused of illegal entry and presence must remain detained throughout proceedings. The administration calls this an "unworkable patchwork" disrupting immigration enforcement. The ACLU, representing the plaintiffs, frames it as a denial of basic due process for millions of people apprehended within US borders rather than at the border itself. The structural question is whether the executive branch can eliminate judicial review of detention decisions for an entire class of people by reinterpreting existing statute. Bond hearings are not release orders — they are a check on indefinite detention, a judge evaluating whether someone needs to be held. Removing that check concentrates enormous discretionary power in ICE enforcement officers with no independent review. The administration's legal argument rests on statutory interpretation: that the Immigration and Nationality Act mandates detention for certain categories of immigrants without requiring bond hearings. The counterargument is that decades of judicial interpretation established bond hearing rights precisely because indefinite detention without review raises constitutional concerns under the Fifth Amendment's due process clause. The Supreme Court's decision will either validate or dismantle the administration's most sweeping detention expansion. If the court sides with the administration, millions of undocumented immigrants in the US interior become subject to indefinite detention at executive discretion. If it sides with the plaintiffs, bond hearings remain a judicial check on ICE enforcement across all circuits.