Introduction

The United States Supreme Court has recently issued several decisions that fundamentally reshape deportation defense tactics. These rulings influence how attorneys and advocates approach cases involving immigration violations and removal proceedings, creating both new opportunities and heightened challenges for noncitizens fighting deportation. Over the past two terms, the Court addressed critical issues including the scope of prosecutorial discretion, the legality of prolonged detention, the validity of certain removal orders, and—most consequentially—the deference owed to federal agencies when interpreting ambiguous immigration statutes. This article examines the most impactful recent decisions and provides actionable strategies for defense attorneys seeking to protect their clients’ rights in an evolving legal landscape. Understanding these changes is essential for any practitioner handling removal defense, as failure to adapt could mean lost opportunities to challenge removal or secure release from detention.

Key Supreme Court Decisions

In the last year, the Supreme Court has issued rulings that fundamentally alter the framework for deportation defense. Three decisions stand out: Loper Bright Enterprises v. Raimondo (2024), which overturned the long-standing Chevron doctrine; Johnson v. Arteaga-Martinez (2022), which defined procedural safeguards for prolonged detention; and Garland v. Gonzalez (2022), which clarified reinstatement of removal orders. Together, these cases demand that defense attorneys rethink traditional arguments and adopt novel legal theories. Each decision addresses a distinct pressure point in removal proceedings, and their combined effect creates both tactical openings and strategic pitfalls.

Loper Bright Enterprises v. Raimondo and the End of Chevron Deference

In Loper Bright Enterprises v. Raimondo, 603 U.S. ___ (2024), the Supreme Court overruled the Chevron deference doctrine, which had required courts to defer to reasonable agency interpretations of ambiguous statutes. The decision profoundly impacts immigration law because agencies like the Department of Homeland Security (DHS) and the Executive Office for Immigration Review (EOIR) rely on statutory interpretation to issue regulations, policies, and administrative decisions. Without Chevron deference, federal courts will now independently determine the meaning of ambiguous provisions in the Immigration and Nationality Act (INA). This shift is the most significant change in administrative law in decades and directly affects every area of immigration litigation, from grounds of inadmissibility to forms of relief.

This shift empowers deportation defenders to challenge agency interpretations that previously would have been nearly impossible to overturn. For example, arguments about the scope of “particularly serious crime” for withholding of removal, or the definition of “crime involving moral turpitude,” can now be litigated with a cleaner slate. Attorneys can cite the plain text, legislative history, and canons of construction without the heavy thumb of agency deference skewing the scale. However, the decision also creates uncertainty: without a uniform interpretive authority, circuit splits may proliferate, and the government may respond with more detailed regulations to survive independent judicial scrutiny. Defense counsel must be prepared to argue that agency interpretations are simply wrong, not merely unreasonable. This means investing in statutory interpretation skills—learning how to use dictionaries, canons like the rule of lenity, and the constitutional avoidance doctrine. The Loper Bright opinion itself emphasized that courts must apply traditional tools of interpretation, so attorneys should ground their arguments in those tools rather than relying on policy disagreements.

External Link: Read the full Loper Bright opinion

Johnson v. Arteaga-Martinez and Prolonged Detention

In Johnson v. Arteaga-Martinez, 596 U.S. ___ (2022), the Supreme Court held that noncitizens subject to prolonged detention under 8 U.S.C. § 1226(c)—the mandatory detention provision for certain criminal aliens—are entitled to bond hearings if detention becomes unreasonably prolonged. The Court did not set a specific time limit, but it underscored that the statute does not authorize indefinite detention without procedural review. Lower courts have since grappled with defining “prolonged,” with many adopting a six-month benchmark from Zadvydas v. Davis by analogy, while others require a fact-specific inquiry. The five-justice majority opinion, written by Justice Breyer, drew heavily on the Due Process Clause and the canon of constitutional avoidance, signaling that immigration detention must have a time limit tied to its purpose.

The ruling provides a critical tool for deportation defense. Attorneys can now file habeas petitions or request bond hearings when clients have been detained for more than a few months under mandatory detention authority. The decision also reinforces that detention must be justified by flight risk or dangerousness, and that noncitizens have a right to an individualized determination. Defense strategies should include documenting the length of detention, challenging the underlying criminal conviction if possible, and presenting evidence of community ties and rehabilitation to rebut dangerousness. Additionally, the case encourages proactive litigation: even before a hearing, attorneys should preserve arguments about unreasonable delay and request periodic reviews. In practice, many immigration judges have been reluctant to grant bond under § 1226(c) without a court order, so filing a habeas corpus petition in federal district court is often the most effective route. The Arteaga-Martinez decision explicitly left open the possibility of class-wide relief, so attorneys should monitor ongoing class actions such as Rodriguez v. Hayes and Perez-Garcia v. Decker for potential opt-in opportunities.

External Link: Read the Arteaga-Martinez opinion

Garland v. Gonzalez and Reinstatement of Removal Orders

Garland v. Gonzalez, 596 U.S. ___ (2022), addressed the scope of reinstatement of removal orders under 8 U.S.C. § 1231(a)(5). The Court ruled that a noncitizen who reenters the United States unlawfully after a prior removal order is subject to reinstatement only if the immigration officer makes a written finding that the noncitizen is indeed the same person who was previously removed. The decision resolved a circuit split over whether a noncitizen could collaterally attack the underlying removal order during reinstatement proceedings. The Court declined to permit broad challenges to the validity of the original order, but it emphasized that the government bears the burden of proving identity by clear and convincing evidence.

For defenders, this means heightened focus on identity documentation—fingerprints, photographs, signatures—and on the chain of custody of immigration records. If the government cannot prove the noncitizen is the same individual, reinstatement fails. Furthermore, the decision does not foreclose challenges based on procedural defects in the reinstatement process, such as failure to provide proper notice or an opportunity to contest identity. Attorneys should scrutinize Form I-871 (Notice of Intent/Decision to Reinstate) for accuracy and completeness, and argue that any ambiguity must be resolved in the noncitizen’s favor. In addition, the decision leaves room to challenge reinstatement when the underlying removal order was entered in absentia without proper notice, or when the order itself is void for lack of jurisdiction. The Gonzalez ruling also reinforces the importance of the written finding requirement—many reinstatement cases fail because the officer’s worksheet lacks a signed determination or contains contradictory statements. Defense counsel should immediately request all records from ICE upon learning of a reinstatement attempt, including the A-file and any NTA documents.

External Link: Read the Gonzalez opinion

Broader Implications for Deportation Defense

Beyond the specific holdings, these three decisions collectively signal a more favorable environment for noncitizens challenging removal, but they also demand greater sophistication from defense counsel. The end of Chevron deference means that statutory ambiguities must be argued directly to immigration judges and federal courts, requiring deeper engagement with textual analysis and legislative history. The Arteaga-Martinez detention ruling reinforces the importance of tracking time and demanding periodic review. The Gonzalez identity requirement forces careful record review. Together, they encourage a rights-based approach that invokes procedural safeguards at every stage. Attorneys should view these decisions as creating overlapping layers of protection: even if one argument fails, another may succeed based on the same set of facts.

Challenging Detention with Procedural Arguments

Prolonged detention remains a powerful pressure point. After Arteaga-Martinez, defenders should routinely file motions for bond or release in both immigration court and federal district court via habeas corpus. The key is to establish that detention has become unreasonable. Factors courts consider include the length of detention, the likelihood of removal within the foreseeable future, the noncitizen’s criminal history, and any mental health or medical conditions. Notably, the Arteaga-Martinez decision explicitly left open the possibility of class-wide relief, so attorneys may consider joining class actions challenging systemic failures to provide bond hearings.

Practical Considerations for Detention Challenges

  • Document the timeline. Create a detailed chronology of detention from the date of arrest, including any extensions, transfers, and missed custody review deadlines.
  • Highlight changed circumstances. If a criminal conviction is later vacated or if new evidence of rehabilitation emerges, argue that the basis for mandatory detention no longer exists.
  • Request a bond hearing even without a court order. Some immigration judges may be willing to schedule a hearing if the attorney files a motion citing Arteaga-Martinez and showing detention has exceeded six months.
  • Use habeas to obtain evidentiary discovery. Federal district court habeas proceedings allow broader discovery than immigration court, including depositions of detention officers and production of internal ICE policies.

Leveraging Prosecutorial Discretion and Policy Challenges

Although Loper Bright strips away Chevron deference, it does not eliminate agency discretion entirely. Agencies retain authority to exercise prosecutorial discretion—deciding which cases to pursue, whether to join motions to terminate, or whether to grant deferred action. Defense attorneys should actively seek administrative closure, dismissal with prejudice, and other forms of discretion from ICE and USCIS. In the post-Loper Bright world, statutory arguments against agency policies may be stronger in court, but plea-bargaining with the government remains essential. For instance, when challenging a Notice to Appear that lacks specific date and time, citing Niz-Chavez v. Garland (2021), defenders can move to terminate proceedings, and the government may exercise discretion to re-serve a proper notice rather than risk a termination order.

Defense teams must revisit earlier cases where statutory interpretations were forced by Chevron deference. Clients previously denied relief because an agency definition seemed “reasonable” may now have viable claims. For example, the BIA’s definition of “particularly serious crime” for asylum and withholding purposes can now be challenged more directly. Similarly, the regulatory definition of “aggravated felony” might be scrutinized if it contradicts the plain language of the INA. The window for reopening closed cases on the basis of this change in law is narrow, but motions for reconsideration or reopening based on a retroactive application of Loper Bright may succeed if the case is still pending review. Attorneys should also consider whether the change in the legal landscape justifies equitable tolling of filing deadlines, particularly for clients with strong claims who were previously discouraged by the difficulty of overcoming Chevron deference.

Impact on Noncitizens with Criminal Convictions

Many of the most significant deportation cases involve noncitizens with prior criminal convictions. The Arteaga-Martinez decision directly affects those detained under mandatory detention provisions for certain criminal offenses. The Gonzalez decision affects individuals who reentered after removal, often following a criminal removal. And Loper Bright opens the door to challenge the BIA's categorical approach to determining which crimes trigger removal grounds. For defense attorneys, this means that criminal defense and immigration defense must be coordinated more than ever. Plea agreements should be structured to avoid triggering removal categories, and post-conviction relief should be sought for clients whose convictions rest on ambiguous statutory language. The end of Chevron deference gives courts more freedom to interpret criminal statutes like the INA's “crime of violence” or “theft offense” definitions without deferring to the BIA's often expansive readings.

Practical Strategies for Defense Attorneys

To capitalize on these developments, deportation defenders should adopt the following tactical approaches. The key is to be proactive rather than reactive, and to integrate these new arguments into every stage of representation from initial consultation through appeals.

Stay Updated on Case Law

Supreme Court decisions are rapidly joined by lower court interpretations. Attorneys should subscribe to immigration law blogs, attend webinars, and join professional listservs. Monitoring circuit court opinions that apply Loper Bright to specific immigration statutes is critical because circuit splits may eventually prompt another Supreme Court review. Maintaining a database of key decisions and tracking footnote citations can save time when writing briefs. Resources like the American Immigration Lawyers Association (AILA) and the Immigration Justice Corps provide regular updates. Also, watch for decisions in cases that were pending at the time of Loper Bright; many circuits are now issuing opinions that directly address how the new framework applies.

  • AILA’s monthly Supreme Court update newsletter
  • Google Scholar alerts for key phrases like “Loper Bright immigration” or “Arteaga-Martinez bond”
  • CourtListener alert for new opinions from the Ninth, Fifth, and Eleventh Circuits (where most immigration cases arise)
  • Follow practitioners on X (formerly Twitter) who post real-time updates on immigration appellate decisions

Build Comprehensive Factual Records

Post-Arteaga-Martinez, detention arguments depend heavily on the length and conditions of confinement. Defenders should obtain detailed detention logs, medical records, and evidence of family ties. For Gonzalez, gather everything related to identity: government records, birth certificates, and any documentation that could create doubt. The more evidence that points to procedural irregularities or ambiguity, the stronger the case. A well-documented factual record can also support a claim for equitable relief or a finding that the government acted arbitrarily.

Utilize Collateral Attacks and Federal Habeas Corpus

Federal district courts remain a vital forum. Habeas petitions under 28 U.S.C. § 2241 can challenge both detention and underlying removal orders in certain circumstances. The Arteaga-Martinez decision explicitly endorsed habeas as a avenue to obtain bond hearings. For reinstatement cases, a habeas petition can challenge the government’s identity finding or the legality of the reinstatement process. Even if the immediate removal is not stayed, a separate habeas proceeding can create a record for appeal. Additionally, consider filing a motion to reopen or reconsider before the immigration judge if new legal precedent emerges; while Loper Bright itself may not be retroactive in all contexts, arguments based on the case are strongest when the administrative case is still open or the time to appeal has not expired.

Develop Statutory Arguments Independent of Agency Guidance

With Chevron gone, defenders must become skilled in statutory interpretation. Learn how to use dictionaries, canons of construction (e.g., rule of lenity, constitutional avoidance), and legislative history. When the INA is ambiguous, argue for the interpretation most favorable to the noncitizen. The Supreme Court has long held that ambiguities in removal statutes should be resolved in favor of the noncitizen—see INS v. Cardoza-Fonseca (1987) and more recently Pereira v. Sessions (2018). That principle is now even more potent without agency deference tilting the balance. Attorneys should also familiarize themselves with the major questions doctrine, which Loper Bright left intact; if a statute has vast economic or political significance, the agency must point to “clear congressional authorization” for its interpretation—a standard that DHS rarely meets.

Preparing for Government Responses

The government will almost certainly appeal adverse decisions and attempt to cabin the reach of these rulings. Expect DHS to argue that Loper Bright does not apply to immigration judges because they are not Article III courts, or that the BIA’s interpretations still deserve deference under Skidmore or Kisor (for regulations). Be prepared to rebut these arguments: immigration judges exercise quasi-judicial authority, and the BIA’s interpretations have never been entitled to the same deference as formal rulemaking. Also anticipate that the government may issue a new regulation codifying its interpretation of key statutory terms in an attempt to avoid litigation on the merits. While such regulations would be subject to notice-and-comment and eventual judicial review, they could buy the government time. Defense attorneys should stay ready to challenge any such regulations as inconsistent with the plain text of the INA.

Conclusion

Recent Supreme Court decisions have reshaped the deportation defense landscape. The end of Chevron deference creates opportunities to challenge flawed agency interpretations. The detention ruling in Arteaga-Martinez provides a constitutional floor against indefinite incarceration. The reinstatement decision in Gonzalez ensures rigorous identity verification. These rulings require defense attorneys to be more proactive, more creative, and more meticulous than ever before. By leveraging procedural rights, challenging detention practices, and arguing for lawful exercise of discretion, advocates can meaningfully protect their clients facing removal. The law has shifted—and with careful strategy, those shifts can be turned into real-world victories for noncitizens. As lower courts begin to interpret these decisions, the next wave of litigation will define how far the changes reach. Defense attorneys who act now, by retooling their arguments and building strong factual records, will be best positioned to secure favorable outcomes for their clients.