The Bench Cannot Replace The President’s War Judgment

For two centuries, the Constitution has vested the political branches, and above all the president, with the responsibility to identify and counter threats from hostile foreign powers. The Alien Enemies Act, still on the books from 1798, is one of the clearest statutory expressions of that allocation. In W.M.M. v. Trump, a divided Fifth Circuit panel granted a preliminary injunction restricting the use of the Act to remove certain Venezuelan nationals in connection with Tren de Aragua. Judge Andrew Oldham dissented. His dissent is not a flourish. It is a careful restatement of the controlling legal framework and a sober warning about what courts are, and are not, competent to do. The thesis is simple. Courts may interpret the Act and police constitutional limits. They may not retry the president’s national security judgment about whether an invasion or predatory incursion, or a threatened version of either, is occurring. On that question, the president’s determination is conclusive.

The case is important, so a brief sketch helps. Earlier this year, the Supreme Court addressed threshold issues bound up with the government’s reliance on the AEA. The Court made clear that detainees can obtain judicial review, but that such review should proceed through habeas and should focus on questions of interpretation, constitutionality, and the individual’s status within the categories Congress made removable. That order sent the core merits back down, and the Fifth Circuit has now weighed in on a preliminary record. The majority, Judges Southwick and Ramirez, concluded that President Trump’s invocation of the AEA cannot proceed because, in their view, the record does not show an invasion or predatory incursion by a foreign nation or government. Judge Oldham disagreed. He would not treat the President like a civil plaintiff obliged to plead and prove facts to judicial satisfaction every time he invokes a centuries‑old war statute. “For 227 years, every President of every political party has enjoyed the same broad powers to repel threats to our Nation under the Alien Enemies Act,” he wrote. Treating President Trump “as if he were some run‑of‑the‑mill plaintiff in a breach‑of‑contract case” contradicts the law and “transmogrifies the least‑dangerous branch into robed crusaders who get to playact as multitudinous Commanders in Chief.”

Why is Oldham right on the law. Because the Supreme Court has said so for more than 200 years, across multiple contexts. Start with Ludecke v. Watkins, which construed the AEA itself. Ludecke holds that courts may review questions of interpretation and constitutionality, and may verify that an individual is in fact an alien enemy of the described age and nationality, but review of the President’s triggering determination is otherwise sharply limited. The Court emphasized the institutional point, namely that judges lack “technical competence” and “official responsibility” to reweigh wartime judgments based on military or diplomatic intelligence. Oldham tracks that framework precisely. He does not claim that the President is above the law. He insists only that the law, correctly read, makes the executive’s determination that a foreign power has perpetrated or threatened an invasion or predatory incursion conclusive.

A familiar line of cases confirms this reading. In Martin v. Mott, Justice Story explained that the question whether an invasion or imminent danger of invasion exists belongs to the President, and that his determination is conclusive. In Luther v. Borden, the Court refused to second‑guess the political branches on the existence of insurrection and the recognition of a state government, precisely because such judgments are allocated away from courts. In Moyer v. Peabody, the Court again treated the executive’s declaration of insurrection as conclusive of the triggering condition, while still policing the means used thereafter. Sterling v. Constantin sharpened the point. Courts can restrain executive excess in the use of force against private parties, but the antecedent political judgment that an exigency exists remains conclusive. The Prize Cases extend the same principle to war. Whether hostilities amount to a war that triggers wartime measures is the President’s call in the first instance. Oldham pulls these strands together. The statutory trigger in the AEA, like the triggers in those classic cases, is a law‑to‑fact determination about foreign hostilities. Under settled law, judges do not reweigh it.

Readers may ask whether that makes courts powerless. Not at all. Ludecke itself preserves judicial review over the meaning of the statute and over constitutional limits. If a President used the AEA to remove citizens, the courts would stop him. If an individual is not a national of the hostile power, courts can say so on habeas and order release. Those questions are judicial. The question whether a predatory incursion is occurring, including whether it is threatened or attempted, is not. That is because it depends on sensitive assessments of strategy, risk, and intelligence that the Constitution entrusts to the political branches and that statutes like the AEA channel to the President.

The majority’s contrary rule rests on a mistake about both history and text. On history, the panel treats “predatory incursion” as if it must mean something like an organized battalion under a foreign flag crossing a beachhead with fife and drum. Oldham shows why that is wrong. The AEA was enacted during the Quasi‑War with France, a conflict of irregular attacks, privateers, and covert operations short of a formal declaration. Members of Congress discussed predatory incursions that were small, opportunistic, and destructive of property rather than territorial occupations. The phrase was designed to capture proxy or irregular hostilities that could, in success, grow into invasion. When Congress coupled “predatory incursion” with “attempted” and “threatened,” it signaled the need for forward defense against unconventional attacks. Oldham also explains that the law of nations at the founding recognized that sovereigns often act through private or semi‑private agents, from letters of marque to covertly directed militias. A foreign nation can wage war by proxy. A statute written for that world should be read accordingly.

On text, the majority insists that the Act requires armed units of some “size and cohesion” directed by a foreign government. Oldham is prepared to accept the direction requirement, because the AEA targets acts by a foreign nation or government. But he rejects a wooden requirement of parade‑ground formation. The point is whether a foreign state is perpetrating, attempting, or threatening an invasion or predatory incursion. If the Maduro regime has cultivated, armed, and directed a network that carries out violent operations inside the United States, then the predicate is satisfied even if the attackers do not wear uniforms. The Act’s inclusion of threatened incursions reinforces this, since threatened incursions are by nature evidenced by intelligence rather than parades. The majority’s cramped reading strips the word “predatory” of meaning and disables the government from countering irregular attacks that were common in the 1790s and are even more common today.

A second strand of Oldham’s dissent concerns competence. Judges have not received the briefings. They lack access to the full intelligence picture that led the President to act. They do not answer to voters for the success or failure of national defense. Oldham’s point is not an insult to judicial capacity, it is an acknowledgment of institutional design. The Fifth Circuit majority demands that the President proffer evidence in a posture and on a timeline that mimics civil litigation, that he produce something like a 600‑page evidentiary appendix and expose classified information to persuade generalist judges that his national security judgment is correct. That is not how the AEA was written to operate, and for good reason. The danger of error is asymmetric. If a court is wrong and an incursion proceeds, the costs are borne by the public, not the judiciary. The Constitution assigns the hard call to the official the public can hold to account.

Some readers worry that if executive determinations are conclusive, there will be no check on abuse. Oldham answers that worry directly. The courts remain open to police the means that the executive employs. Sterling is the example. Courts can and should enjoin uses of force that are incompatible with constitutional rights or exceed statutory authorization. They can ensure due process protections, and they can grant habeas relief if the government detains or removes someone outside the statutory category. But these are distinct from the political branches’ judgment that a foreign power has perpetrated or threatened hostile incursions. Conclusiveness at the front end does not mean impunity at the back end.

Consider how Oldham frames Tren de Aragua. He does not minimize the threat. He emphasizes, with record support, that TdA is not just some gang, it is deeply intertwined with the sovereign nation of Venezuela, and that the danger it poses to the Nation is hard to overstate. That reality was underscored when Caracas arranged a swap, trading Americans and Salvadorans in Venezuelan custody for TdA detainees held in El Salvador, a sovereign-to-sovereign exchange that only makes sense if TdA operates as an agent or paramilitary proxy of the Maduro regime. Whether one agrees with every characterization or not, the legal point does not require agreement on particulars. It requires recognition that the executive is the actor with the information and the responsibility to decide, in real time, whether the AEA’s predicate is met. In past wars, foreign agents in the United States were targets of removal not because they wore uniforms, but because they acted on behalf of hostile powers. The problem is the same now, even if the actors use migration flows, encrypted communications, and decentralized cells.

Oldham also situates his view within modern administrative and separation‑of‑powers doctrine. Where statutes delegate fact‑intensive judgments to the executive in areas of foreign affairs and national security, courts routinely afford deference or find the questions unreviewable. That is not judicial abdication. It is statutory fidelity and constitutional modesty. The Supreme Court’s decision in United States v. Texas underscores the point by reaffirming the breadth of executive enforcement discretion in the immigration context. The AEA is not the INA, but the symmetry is instructive. Courts are well equipped to decide the meaning of statutes and to adjudicate individual claims under those statutes. They are ill equipped to substitute their hunches for the President’s national security determinations.

The dissent also corrects a doctrinal misstep in the majority’s approach to Baker v. Carr. Some amici and judges treat Baker’s stray dicta about “manifest” errors as a roving license to override conclusive executive determinations in national security matters. Oldham shows why that is mistaken. Baker did not involve war powers or the AEA, it did not set aside the long line of cases treating executive findings of invasion or insurrection as conclusive, and the Supreme Court has never used Baker to reweigh a President’s recognition of hostilities. Conclusive means conclusive. The existence of a political question is not a get‑out‑of‑precedent card.

There is a final prudential point. The majority’s rule invites a judge‑by‑judge, district‑by‑district national security policy. If the President must persuade each court that a dynamic threat crosses a judicially invented threshold, the Nation will lurch between injunctions while adversaries adapt. Oldham’s rule avoids that. It allocates the first and last word on the trigger to the President, who must answer to Congress and the voters and who can be checked on the means he chooses. It leaves intact the habeas forum for individual detainees to say, with evidence, that they are not within the statute’s terms. That is the stable and constitutional equilibrium.

How should the Supreme Court resolve the coming petition. It should adopt Oldham’s rule. The Court already clarified that habeas is the right procedural vehicle and that detainees receive judicial review. It should now make explicit that the President’s determination that a foreign nation has perpetrated, attempted, or threatened an invasion or predatory incursion under the AEA is conclusive. It should reaffirm Ludecke’s core holding on interpretation, constitutionality, and status, and it should reject any attempt to import civil pleading requirements into the Commander in Chief’s war judgments. It should note that history, text, and structure converge on the same outcome, and it should leave for another day any dispute over the propriety of particular methods used to implement AEA removals.

If courts want to preserve their legitimacy, they should stay within their lane. The Constitution does not give judges a roving commission to supervise foreign policy. The AEA reflects that settlement, born in the era of privateers and still rational in the age of proxies and irregular warfare. Judge Oldham’s dissent is a blueprint for honorably discharging the judicial role, interpreting the law with care while refusing to recast the judiciary as Commander in Chief. That is not radical. It is the old law. It is the right law.

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