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Immigration Detention and USCIS Delays Face Federal Court Battles in 2026

BIA rulings, new DHS directives, and USCIS adjudication delays are fueling a wave of federal litigation through habeas corpus, APA, and mandamus actions in 2026.

Written by

Victoria Harper

Editor-in-Chief

Updated on June 1, 2026
6 min read
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Detenção Imigratória e Atrasos do USCIS Enfrentam Disputas Judiciais em 2026

The United States immigration system is experiencing in 2026 one of the most intense periods of judicial dispute in recent decades. Federal courts, immigration attorneys, and advocacy organizations across the country have increased scrutiny on two simultaneous fronts: the sharp decline in bond grants in immigration courts and the prolonged delays in USCIS adjudications tied to new security vetting procedures. For those in adjustment of status proceedings, asylum proceedings, or awaiting decisions on immigration benefits, understanding the current legal landscape has moved from optional to an essential component of any defense strategy.

Bond Grant Rates Fall to Historic Lows

Immigration court bond grants dropped dramatically since 2025. Practitioners report that national approval rates reached approximately one quarter of cases by the end of 2024, significantly reducing detained noncitizens’ access to meaningful bond hearings. The practical result is prolonged detention for a growing number of international applicants.

The decline coincided with deep structural changes in the immigration court system. The expanded hiring of judges from prosecution and enforcement backgrounds, combined with high staff turnover at EOIR throughout 2025, shifted the decisional profile of the courts. Legal observers note that these changes contributed to more restrictive custody determinations and growing disparities in bond outcomes across jurisdictions.

DHS and BIA Expand Mandatory Detention

Immigration detention policy changed substantially in 2025 following new DHS directives and precedential decisions from the Board of Immigration Appeals (BIA). On July 8, 2025, DHS instructed officers to classify many noncitizens who entered without inspection as applicants for admission subject to mandatory detention under INA section 235(b), rendering numerous detainees ineligible for bond hearings.

The policy was reinforced by the precedent Matter of Yajure-Hurtado, which held that immigration judges lacked authority to grant bond in certain cases involving entry without inspection. Additional BIA decisions in 2025, including Matter of Q. Li and Matter of Dobrotvorskii, further restricted access to release and raised the evidentiary burden in bond proceedings. Attorneys report that these changes substantially reduced bond hearings nationwide.

Federal Courts Respond to the Expansion

Federal courts across multiple jurisdictions began reviewing challenges to the expanded detention policies through habeas corpus and litigation under the Administrative Procedure Act (APA). The movement represents one of the most coordinated judicial responses in recent years against changes in immigration enforcement.

In Lopez Benitez v. Francis, a federal court held that a detained asylum seeker was entitled to individualized custody review under INA section 236, rather than mandatory detention under section 235. Other litigation, including the nationwide class action Maldonado Bautista v. Santacruz, challenged the legality of the detention framework and restored access to bond hearings for certain detainees.

Although litigation remains ongoing and outcomes vary by jurisdiction, habeas corpus petitions have become a significant tool for challenging prolonged detention and bond denial. For the detained international applicant, familiarity with this legal avenue can be decisive.

Enhanced Vetting Stalls Adjudications

On a separate front from detention litigation, immigration attorneys nationwide reported widespread adjudication delays tied to new vetting procedures implemented in April 2026. The measure affected applicants of various nationalities indiscriminately.

Beginning April 27, 2026, USCIS initiated enhanced security screening measures requiring updated fingerprint submissions and new FBI background checks across several categories of pending immigration benefits. Reports indicate that adjustment of status applications, asylum proceedings, and other benefits requiring biometrics experienced substantial processing interruptions as the new procedures are completed.

In numerous cases, applicants who had already completed prior fingerprint collection and security checks received notifications requiring new biometrics or experienced unexplained pauses in adjudication. As of April 2026, comprehensive public guidance on the precise scope and expected duration of these suspensions had not been widely released.

Administrative Law Principles Guide Litigation

Disputes over USCIS delays have centered on administrative law principles requiring federal agencies to act within a reasonable time under the Administrative Procedure Act, even while conducting security vetting and background checks. The doctrine is clear: discretion over the substance of a decision does not equal discretion over whether to decide.

Courts assessing unreasonable delay claims commonly apply the TRAC framework, which examines factors such as the reasonableness of the delay, agency priorities, and harm to affected individuals. Immigration litigation has consistently held that generic references to security concerns or workload volume do not justify indefinite inaction, particularly when federal law already provides post-adjudication enforcement mechanisms against fraud or disqualifying conduct.

Federal Mandamus Gains Traction

As delays persist, federal mandamus litigation has received renewed attention from immigration attorneys and affected applicants. The Mandamus Act, codified at 28 U.S.C. section 1361, authorizes courts to compel federal agencies to perform non-discretionary duties owed to petitioners.

In the immigration context, mandamus actions are often combined with Administrative Procedure Act claims. Courts have repeatedly distinguished between an agency’s discretion over the merits of a decision and its obligation to issue a decision within a reasonable timeframe. The point is technical but central: mandamus does not force approval of a petition; it only requires USCIS to adjudicate the pending matter by either approving or denying it.

Attorneys report that mandamus actions become particularly relevant when delays substantially exceed normal processing times, involve generic agency explanations without individualized review, or cause significant hardship to applicants, including employment disruption, travel restrictions, or prolonged legal uncertainty.

When Mandamus Makes Sense

Recent legal commentary suggests that courts may scrutinize indefinite adjudication holds more closely when no end date or individualized need has been identified. For international professionals who have been awaiting adjustment of status for years beyond average processing times, the mandamus route has emerged as a concrete tool for judicial pressure on USCIS.

Landscape Remains in Motion

Immigration detention practices, bond eligibility standards, and USCIS adjudication procedures remain subject to ongoing litigation and administrative review. Appeals challenging the legality of expanded detention classifications and prolonged adjudication delays are expected to continue throughout 2026.

Attorneys representing detained immigrants and applicants with stalled adjudications are increasingly turning to federal court litigation to challenge prolonged detention, bond denial, and extended agency inaction. Legal organizations, advocacy groups, and practitioners continue to monitor developments involving habeas corpus litigation, Administrative Procedure Act claims, nationwide class actions, and mandamus proceedings related to both detention policy and adjudication delay.

Observers note that future appellate decisions may significantly shape the balance between agency enforcement authority, due process protections, and statutory obligations governing immigration adjudications. For the international applicant, staying current on these shifts has become part of the migration planning calculus for those pursuing pathways in the United States.

Victoria Harper

Editor-in-Chief

Meet the author

Leading journalism and editorial content at Visto n’ Visa, Victoria helps make immigration topics clear, trustworthy, and easy to understand. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.

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