Immigration Detention & Removal

Immigration detention is the federal government's power to arrest and hold noncitizens during immigration proceedings or pending removal from the United States. Unlike criminal detention (which requires probable cause and judicial oversight), immigration detention is civil in nature — governed by a distinct set of statutes that give the executive branch broad authority to detain people, in some cases mandatorily and indefinitely. The system holds approximately 30,000-40,000 people on any given day in a network of ICE-operated facilities, private contract prisons, and county jails, making it one of the largest detention systems in the country.

Current Law (2026)

Legal Authority

• 8 U.S.C. § 1226 — Apprehension and detention (Attorney General/DHS may arrest and detain noncitizens pending removal decisions; discretionary detainees may be released on bond or conditional parole; mandatory detention required for certain criminal aliens)
• 8 U.S.C. § 1226(c) — Mandatory detention (noncitizens deportable for aggravated felonies, controlled substance offenses, certain firearms offenses, and other specified crimes must be detained without bond)
• 8 U.S.C. § 1226a — Mandatory detention of suspected terrorists (AG shall take into custody noncitizens certified as terrorists; detention continues until removal; review every 6 months; cannot be detained longer than 7 days without removal proceedings or criminal charges)
• 8 U.S.C. § 1231 — Detention and removal after final order (90-day removal period begins when removal order becomes final; DHS shall remove the alien within 90 days; may continue to detain beyond 90 days if alien is a risk or removal is not practicable)
• 8 U.S.C. § 1232 — Unaccompanied alien children (must be transferred from DHS to HHS Office of Refugee Resettlement within 72 hours; special protections for trafficking victims; children from noncontiguous countries may not be immediately returned)
• 8 U.S.C. § 1252 — Judicial review (review of final removal orders in circuit courts only; limited scope; no judicial review of discretionary decisions; habeas corpus jurisdiction preserved for constitutional questions)

How It Works

Immigration detention operates in three phases: pre-decision detention (while removal proceedings are pending), mandatory detention (for specified categories), and post-order detention (after a removal order is final).

Pre-decision detention (§ 1226(a)) applies to noncitizens arrested pending a decision on whether they'll be removed through removal proceedings. For most detainees in this category, DHS has discretion to release them on bond (minimum $1,500) or conditional parole. An immigration judge can review and adjust the bond amount. The decision turns on whether the person is a flight risk or danger to the community.

Mandatory detention (§ 1226(c)) strips that discretion for specific categories: noncitizens convicted of aggravated felonies, controlled substance offenses, certain firearms offenses, crimes of moral turpitude, espionage, sabotage, or terrorism-related offenses. These individuals must be detained without bond — the government has no discretion to release them, and immigration judges cannot set bond. The Supreme Court has held (Jennings v. Rodriguez, 2018) that § 1226(c) does not require periodic bond hearings, though due process may impose limits on indefinite mandatory detention.

Post-order detention (§ 1231) begins when a removal order becomes administratively final. DHS has a 90-day removal period to effect removal. During this period, detention is mandatory. After 90 days, DHS may continue to detain certain individuals (those with criminal records, flight risks, or security threats) or release them under supervision. The Supreme Court in Zadvydas v. Davis (2001) held that post-order detention cannot be indefinite — if removal is not reasonably foreseeable, the alien must generally be released after roughly 6 months.

Unaccompanied children (§ 1232) receive special protections. DHS must transfer unaccompanied minors to HHS's Office of Refugee Resettlement (ORR) within 72 hours. ORR places children in the least restrictive setting appropriate — licensed care programs, foster care, or release to family members. Children from noncontiguous countries cannot be immediately returned at the border and must be placed in formal removal proceedings.

Judicial review is deliberately limited by § 1252. Final removal orders are reviewable only in the circuit courts of appeals — not in district courts. Many discretionary decisions are explicitly shielded from judicial review. However, the statute preserves habeas corpus jurisdiction for constitutional claims, and courts have used this to address due process challenges to prolonged detention.

How It Affects You

State Variations

Implementing Regulations

• 8 CFR Part 236 — Apprehension and detention of inadmissible and deportable aliens (custody determinations, bond, detention standards)

• 8 CFR Part 241 — Apprehension and detention of aliens ordered removed (post-order detention, supervision, removal period)

• 8 CFR Part 1240 — EOIR removal proceedings (hearing procedures, voluntary departure, relief from removal)

• 8 CFR Part 1241 — EOIR post-order custody reviews

• 8 CFR Part 208/1208 — Asylum procedures (reasonable fear, credible fear, withholding of removal)

• 45 CFR Part 410 — Care and Placement of Unaccompanied Children (61 sections across multiple subparts): the ORR regulations governing what happens to unaccompanied children after DHS transfers custody within the required 72-hour window. This Part defines the full lifecycle of ORR care, from initial placement to family reunification (or release to a sponsor):

  • § 410.1003 — General principles: ORR must place each child in the least restrictive setting appropriate for the child's age and needs; restrictive placements (secure facilities, residential treatment centers) require specific justification and are exceptions, not defaults
  • § 410.1102 — Care provider facility types: standard programs (the vast majority of placements) are licensed shelters or foster care; restrictive placements include staff-secure facilities (limited freedom of movement within the facility) and secure facilities (locked, comparable to juvenile detention); the distinction matters because children in secure facilities have more limited access to legal representation and family contact
  • § 410.1104 — Default placement: ORR must place all children in standard (non-restrictive) programs unless specific restrictive criteria apply — the rule creates a presumption against confinement that mirrors the Flores Settlement Agreement framework it was designed to codify
  • § 410.1105 — Criteria for restrictive placement: a child may be placed in a staff-secure or secure facility if the child presents a danger to self or others, has committed a criminal offense, or has a history of disruptive behavior that cannot be managed in a standard program; flight risk alone is not sufficient for a secure placement — the criteria distinguish between children who might run away (staff-secure option) and those who pose active safety concerns (secure facility)
  • § 410.1109 — Required notice of legal rights: ORR must promptly provide every child in its custody, in a language the child understands, notice of: the right to a removal hearing before an immigration judge, the right to apply for asylum, available free legal services, and the right to communicate with the child's country's consulate; for trafficking victims, additional rights under the TVPRA apply
  • § 410.1201 — Sponsor categories: ORR's preferred release hierarchy — (1) a parent, (2) a legal guardian, (3) an adult sibling, (4) an adult aunt, uncle, or grandparent, (5) an adult unrelated friend of the family or individual designated by the child's parent, (6) other adults; a sponsor is the person to whom ORR will release the child while removal proceedings continue in immigration court
  • § 410.1202 — Sponsor suitability assessment: all sponsors must complete an application, submit identity and relationship documentation, and undergo a background check including fingerprinting (required for Category 5-6 sponsors; discretionary for parents/guardians depending on case); the intensity of the background check increases with the sponsor's distance from the child's family
  • § 410.1204 — Home studies: ORR may require a social worker to conduct an in-home assessment of a potential sponsor's environment before release; home studies are mandatory when: the child is a trafficking victim, the child has a disability or special need, the sponsor has a criminal history, or there is information suggesting the child may be at risk in the sponsor's home
  • § 410.1207 — 90-day review: when a sponsor application has been pending for 90 days without release, supervisory staff must review and document the cause of the delay and the plan to resolve it; this provision was added to address reports of children lingering in ORR custody for months while sponsor applications stalled
  • § 410.1210 — Post-release services: before releasing a child, ORR care providers must work with sponsors to identify and connect the child to legal services, school enrollment, and mental health services; ORR may provide post-release services (PRS) through contractors in the sponsor's community for children with complex needs, though PRS resources are limited relative to the number of released children

  The 2024 rules (89 FR 34584 and 89 FR 53361) codified ORR's operational policies that had previously existed only in guidance documents, strengthening legal rights notices, sponsor vetting procedures, and protections against trafficking exploitation through the ORR system. A 2025 amendment (90 FR 13556) reflected the second Trump administration's approach to the program, and the rules continue to evolve with each administration change given the contested nature of UAC policy at the intersection of immigration enforcement and child welfare.

• 45 CFR Part 411 — Standards to Prevent, Detect, and Respond to Sexual Abuse and Sexual Harassment Involving Unaccompanied Children (48 sections): the PREA-equivalent regulations governing sexual safety in ORR-funded care provider facilities (shelters, group homes, transitional foster care — not secure facilities or traditional foster care homes). Key provisions:

  • § 411.11 — Zero tolerance: ORR must maintain a written zero-tolerance policy; each care provider facility must designate a Prevention of Sexual Abuse Coordinator and a Compliance Manager responsible for implementing the policy
  • § 411.13 — Supervision requirements: facilities must develop staffing plans providing adequate supervision to prevent abuse; camera systems required; sight-line requirements for sleeping areas and bathrooms; staff must conduct visual checks of sleeping areas without obstructing entry
  • § 411.14 — Cross-gender search limits: cross-gender pat-down searches of unaccompanied children are prohibited except in exigent circumstances; transgender or intersex children are searched in the manner consistent with their gender identity or presentation; cross-gender viewing (strip searches) is prohibited
  • § 411.16 — Hiring standards: facilities cannot hire or promote individuals with a sexual offense conviction, substantiated sexual misconduct allegation, or disqualifying sex-related finding; all new employees must be subject to a criminal background check and National Sex Offender Public Website check before having contact with children
  • § 411.21 — Victim services: facilities must provide access to victim advocacy services, counseling, and forensic medical examinations at no cost to the child; children must be informed of their right to report abuse and must be notified about confidential support options
  • § 411.22 — Investigation requirements: all allegations must be investigated; ORR and facilities must separate alleged abusers from victims immediately; law enforcement must be notified of criminal conduct; retaliation against a child for reporting is prohibited
  • § 411.31 — Staff training: all staff who may have contact with unaccompanied children must be trained on recognizing signs of sexual abuse, how to respond to disclosures, the facility's zero-tolerance policy, and anti-retaliation protections; training must be repeated annually
  • § 411.111 — Audits: every ORR care provider facility must be audited by an external, independent auditor at least once every three years; "Does Not Meet Standard" findings trigger a mandatory 90-day corrective action plan jointly developed by the auditor and ORR

8 CFR Part 1236 — Apprehension and Detention of Aliens

The foundational arrest and detention rules for aliens in removal proceedings appear at 8 CFR Part 1236 — Apprehension and Detention of Aliens. This Part bridges INA § 236 (the civil detention authority) with the operational procedures immigration officers and immigration courts use when an alien is taken into custody.

• § 1236.1 — Warrant of Arrest: an alien subject to removal proceedings may be arrested on a Form I-200 Warrant of Arrest, issued by a designated immigration officer; the warrant authorizes arrest without a criminal warrant because removal proceedings are civil; certain categories of aliens — those deportable on specified criminal grounds or security grounds under INA § 236(c)(1) — are subject to mandatory detention and must be held without bond for the duration of proceedings; all other aliens may be released on their own recognizance, on bond, or under supervision
• § 1236.2 — Aliens confined in penal or mental institutions: ICE does not take physical custody of an alien who is currently serving a sentence in a federal, state, or local institution; instead, ICE lodges a detainer and takes custody after the sentence is served; the rule also addresses aliens who are mentally incompetent and those who are juveniles
• § 1236.3 — Detention of juveniles: aliens under 18 taken into custody must be released as quickly as possible to a responsible adult; the release preference order is (1) parent, (2) legal guardian, (3) adult relative (brother, sister, aunt, uncle, grandparent), (4) adult individual designated by the parent; if no responsible adult is available, juveniles must be placed in the least restrictive setting appropriate to their age and needs — non-secure, licensed child care facility if possible; juveniles may not be held in a facility used to detain adults
• § 1236.4 — S-visa nonimmigrant witnesses and informants: aliens admitted on S-5, S-6, or S-7 nonimmigrant visas (law enforcement witnesses and informants) waive their right to a hearing as a condition of the classification; if their cooperation agreement is violated, they may be removed expeditiously without the standard hearing rights that other detained aliens hold
• § 1236.5 — Fingerprinting and photographing: aliens 14 years of age or older who are taken into removal proceedings must be fingerprinted and photographed; these records are maintained as part of the alien's enforcement record and may be shared with other federal law enforcement agencies
• § 1236.6 — Confidentiality of detainee information: information about aliens held under DHS control may not be disclosed to any person or entity other than to federal government officials who need the information to perform their duties; state or local law enforcement, private parties, and media have no right to this information without separate legal authority; the rule is designed to prevent ICE detainees from being located by private actors

The apprehension and detention framework under Part 1236 is frequently litigated. Courts have wrestled with the scope of mandatory detention under § 236(c) — particularly whether it applies to long-term permanent residents arrested years after completing a criminal sentence — and with the substantive due process limits on how long aliens may be detained without a bond hearing. The Supreme Court addressed these questions in Jennings v. Rodriguez (2018) and Johnson v. Arteaga-Martinez (2022), holding that the statute does not automatically require periodic bond hearings but leaving constitutional questions open on remand. The juvenile detention provisions interact with the Flores settlement agreement, which sets minimum standards for the care and release of migrant children that go beyond what Part 1236 alone requires.

Pending Legislation

• HR 7190 — Would end federal immigration detention entirely and redirect funding to community-run alternatives to detention. Status: Introduced.
• HR 6397 — Would impose strict DHS detention standards and phase out private immigration detention facilities within 3 years. Status: Introduced.
• S 3932 — Would require DHS audits at ICE detention centers before accepting new detainees, creating a pre-admission inspection regime. Status: Introduced.
• HR 7347 — Would mandate real-time facility health reporting, establish anonymous complaint mechanisms, and require Inspector General audits of detention conditions. Status: Introduced.
• S 3927 — Would bar the use of certain federal funds for immigration detention warehouses. Status: Introduced.

Recent Developments

Immigration detention has been one of the most contested policy areas across administrations. Detention capacity, conditions, and the treatment of families and children have driven litigation, legislative proposals, and executive action. The Biden administration's detention policies differed significantly from Trump-era approaches, and the second Trump administration has expanded detention capacity and enforcement. Court decisions continue to shape the boundaries of mandatory detention, prolonged detention, and due process requirements. The use of alternatives to detention (ankle monitoring, check-ins, case management programs) has expanded but remains secondary to physical detention.

• The Trump administration asked the Supreme Court in March 2026 to allow revocation of Temporary Protected Status for Haitian nationals, seeking to pause a D.C. federal judge's ruling that had barred the government from proceeding with TPS termination.
• Detention capacity expansion and Guantanamo (2025): Trump's executive orders directed ICE to expand immigration detention to 100,000+ beds (from approximately 40,000 under Biden) and used military facilities, including Fort Bliss and the Guantanamo Bay naval base, as detention sites. Congress had appropriated funds for a lower detention bed count; the administration argued presidential national security authority allowed exceeding the appropriated bed number. Courts examined whether using Guantanamo for civil immigration detention (not terrorism-related military detention) was lawful.
• TREN DE ARAGUA and gang designation removals (2025): Trump designated Tren de Aragua and MS-13 as Foreign Terrorist Organizations (FTOs) and used the Alien Enemies Act of 1798 to remove designated gang members without standard immigration court proceedings. Courts issued emergency injunctions blocking some removals, finding the Alien Enemies Act — written for wartime enemy combatants — may not apply to civil immigration enforcement absent a congressional declaration of war. The J.G.G. v. Trump case became a landmark test of the AEA's scope. The Supreme Court allowed some deportation flights to proceed while litigation continued.
• Abrego Garcia wrongful deportation (2025): Kilmar Armando Abrego Garcia — a Maryland man with no criminal record and a valid immigration order protecting him from deportation to El Salvador — was mistakenly deported to El Salvador's CECOT prison in March 2025. A federal judge ordered his return; the Trump administration declined, claiming courts lacked authority to direct foreign policy. The Supreme Court ruled unanimously that the administration must facilitate his return, but the administration claimed they could not force El Salvador to release him. The case became a symbol of due process concerns under mass deportation operations.
• Expedited removal expansion (2025): Trump's executive orders expanded expedited removal — allowing deportation without immigration court hearings — to apply anywhere in the United States, not just within 100 miles of the border. Under expanded expedited removal, any person who cannot immediately prove continuous presence in the U.S. for 2+ years can be summarily removed. Courts challenged the expansion; the 9th Circuit found the expansion required notice-and-comment rulemaking. The combination of expedited removal and Alien Enemies Act deportations has reduced immigration court proceedings for a significant fraction of removed individuals.