Case Summary and Outcome

A United States District Court granted a senator’s motion for preliminary injunction against the Department of Defense for retaliation against the senator’s criticism of military actions. The senator had appeared in a video reminding active service members that they could refuse illegal orders, and the department had formally censured him and initiated administrative action that could reduce his retired rank and benefits. The Court found the senator’s speech to be protected under the First Amendment to the U.S. Constitution and that the department’s actions were clearly retaliatory and so the senator had demonstrated a substantial likelihood of success on the merits. As the loss of First Amendment freedoms always constitutes irreparable harm and in finding that the other requirements for a preliminary injunction were met, the Court granted the motion.

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Facts

On November 18, 2025, Mark Kelly, a retired United States Navy Captain and a sitting senator from Arizona, appeared in a video with five other Members of Congress, all members of the Democratic Party and veterans of the armed forces or intelligence services. Since his election to the Senate in 2020, Kelly had served on the Senate Armed Services Committee, which oversees the Department of Defense (“DOD”), and on the Senate Select Committee on Intelligence.

The video addressed service members and stated that members of the armed forces “can refuse illegal orders.” In the video, Kelly identified himself by saying, “I was a captain in the United States Navy,” and the group stated it sought to “speak directly to members of the military,” referencing “enormous stress and pressure” on service members and stating that the government was “pitting our uniformed military … against American citizens.” Kelly then stated: “Our laws are clear. You can refuse illegal orders.”

Kelly had been a critic of the President Donald Trump administration’s military activities before. In June 2025, Kelly had joined the Democratic Party caucus in the U.S. Senate in sending a letter to President Trump urging the withdrawal of troops deployed to Los Angeles and later co-sponsored legislation and participated in Armed Services Committee hearings on the same issue in November and December 2025. He had also criticised the lethal strikes on boats in the Caribbean which the Trump Administration alleged were smuggling drugs, and demanded an investigation into the policy. He appeared on the television news station, CNN, on November 30, 2025 and when asked whether a second strike on a boat to eliminate survivors would constitute a war crime he responded “it seems to,” and stated that he would have refused to carry out such an order if he had received it. [p. 3-4]

On November 24, 2025, the DOD publicly announced a review of “serious allegations of misconduct” against Kelly, indicating that the allegations might warrant “recall to active duty for court-martial proceedings or administrative measures.” [p. 4] The next day, Secretary of Defense Pete Hegseth sent a memorandum to the Secretary of the Navy John Phelan requesting a review of Kelly’s “potentially unlawful comments” by December 10. [p. 4] On December 11, 2025, news reports indicated Phelan had delivered his report to Hegseth. Kelly’s lawyers sought confirmation of the probe and requested an immediate halt to any proceedings but received no substantive response.

On January 5, 2026, Hegseth issued a Secretarial Letter of Censure against Kelly, which stated that “[b]etween June 2025 and December 2025, [Kelly] engaged in a sustained pattern of public statements that characterized lawful military operations as illegal and counseled members of the Armed Forces to refuse orders related to those operations.” [p. 5] It concluded that Kelly’s statements had “undermined the chain of command, counseled disobedience to lawful orders, created confusion about duty, and brought discredit upon the Armed Forces.” [p. 5] The letter formally censured him “for conduct prejudicial to good order and discipline in the armed forces and conduct unbecoming an officer,” determined that “good cause” existed to reopen the determination of his retired grade, and directed the Secretary of the Navy to recommend whether a reduction in grade was appropriate. [p. 5] It warned that continued similar conduct could “subject [himself] to criminal prosecution or further administrative action,” permitted a “written rebuttal,” and stated there was no “right to appeal.” [p. 5]

Also on January 5, 2026, the Chief of Naval Personnel sent a separate notification to Kelly, referring him to retirement grade determination proceedings (the “Retirement Grade Proceeding”). The notification confirmed that his “retirement paygrade will be revisited,” and stated that the sole “factual basis supporting [the] action” was the “letter of censure.” [p. 6]

On January 7, 2026, Senator Kelly’s counsel sent a letter to Hegseth noting that they believed that the Letter of Censure and the Retirement Grade Proceeding violated the Constitution and exceeded DOD’s statutory authority, requesting that he “halt immediately any further proceedings” pending judicial review. [p. 6]

Having received no substantive response from Hegseth, on January 12, 2026, Kelly filed an application in the District Court for the District of Columbia against Hegseth, Phelen and the Department of the Navy. He submitted that Hegseth had violated his rights under the First Amendment, and sought a temporary restraining order, but later amended this to a motion for a preliminary injunction.

The First Amendment states that “Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.”

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Decision Overview

Judge Richard J. Leon delivered the Memorandum Opinion. The central issue for the Court’s determination was whether Kelly had demonstrated a likelihood of success on his First Amendment rights violation claim.

Kelly argued that he had experienced viewpoint discrimination and retaliation as a result of his exercise of his rights under the First Amendment. The First Amendment “prohibits government officials from retaliating against individuals for engaging in protected speech”. [p. 18]

Hegseth argued that the Court did not have jurisdiction because the actions taken against Kelly were “nonjusticiable military personnel decisions”. [p. 8] It added that Kelly’s speech was not protected by the First Amendment because the protections are “more limited in the military context”. [p. 18]

The Court noted that not all military personnel decisions are exempt from judicial review, and referred to Brown v. Glines which related directly to the application of the First Amendment in such decisions.

The Court set out the requirements Kelly would have to meet to obtain a preliminary injunction: that he has a likelihood of succeeding on the merits in the main case; that he is likely to suffer irreparable harm if the injunction is not granted; that “the balance of equities tips in his favour”; and that an injunction is in the public interest. [p. 7-8]

In assessing his likelihood of success on the merits, the Court stated that the “retaliation framework fits like a glove”. [p. 18] It applied the three-part test to determine whether there had been retaliation, and so looked at whether Kelly had engaged in protected speech, whether Hegseth took retaliatory action, and whether there was a causal link between the two.

On protected speech, the Court described Kelly’s statements as “speech on matters of public concern” entitled to “special protection,” and rejected Hegseth’s attempt to treat his speech as unprotected by extending active-duty precedents (especially Parker v. Levy) to retirees. [p. 19] The Court emphasised that the cases Hegseth relied on “uniformly involve active-duty servicemembers or speech on military bases,” and that he and the other defendants “have not identified a single case extending Parker’s reasoning” outside the context of active-duty service members. [p. 21] It added that while the active-duty rationale did not transfer to retirees – who are part of the “civilian community” and are not fully immersed in the “specialized society” of active service and so their speech does not present the same direct threat to “obedience, unity, commitment, and esprit de corps” as does active-duty service members – it was even weaker in respect of Kelly because of his position as a senator. [p. 21-22] The Court stressed the constitutional role of legislators, stating that “representative government requires that legislators be given the widest latitude to express their views on issues of policy,” and warning that if legislators cannot speak “without fear of reprisal by the Executive, our representative system of government cannot function!” [p. 22]

The Court rejected Hegseth’s argument that Congress had made the Uniform Code of Military Justice applicable to retired service members as irrelevant as “that choice has little bearing on the scope of First Amendment protections for retirees”, and that the First Amendment “is a limitation on the power of Congress,” “not the other way around!”.  [p. 23]

Accordingly, the Court held that “[b]etween the lack of precedent extending Parker outside the context of active-duty military and the heightened free speech protection for legislators, Senator Kelly’s speech must receive full First Amendment protection.” [p. 22]

In examining whether Hegseth’s actions constituted retaliation sufficient to deter “a person of ordinary firmness,” that Court described this bar as “not a high one” and that Hegseth clearly passed it. [p. 23] This was because the letter of censure, which had been placed in Kelly’s personnel file, formally censures him for speech, reopens his retired-grade determination, and warns of “criminal prosecution or further administrative action” if he continued similar conduct by engaging in protected speech. [p. 23] The retirement-grade proceeding itself required participation in an administrative process and threatened tangible punishment by docking rank and pay; the Court highlighted that Hegseth called it a “serious administrative action that sends real signals.” [p. 24]

Crucially for this prong, the Court relied on an amicus brief filed by former service secretaries, retired senior military officers, and the Vet Voice Foundation to substantiate that the challenged actions were already chilling public participation by other retirees. The Court quoted the brief’s report that many veterans are “declining” to “participate in public debate on important and contested issues” out of fear of “official reprisal,” and described it as “a troubling development in a free country!” [p. 24] This test is an objective one, and so whether Kelly was an “unusually staunch individual” and had not been deterred was “beside the point.” [p. 25]

On the question of causation, the Court found the link because “the Letter of Censure could hardly be clearer”: it stated on its face that it was issued for Kelly’s “sustained pattern of public statements” criticizing military operations and counseling refusal of illegal orders. [p. 25] Because Kelly showed a strong likelihood of success on retaliation, the Court said it “need not” decide viewpoint discrimination at this stage, but added that viewpoint-discrimination analysis would be “just as straightforward,” emphasizing that viewpoint-based restrictions are “presumptively unconstitutional” and ordinarily survive only if “narrowly tailored to serve compelling state interests.” [p. 25]

Accordingly, the Court held that Kelly had demonstrated that Hegseth had engaged in retaliation against his protected speech.

The Court held that Kelly had suffered, and will suffer irreparable harm without and injunction because, as the Supreme Court has held in Mahmoud v. Taylor and Media Matters for America v. Paxton, the loss of First Amendment rights constitutes irreparable harm. It found that the letter of censure and retirement-grade proceedings were clear examples of irreparable harm and rejected Hegseth’s argument that Kelly’s insistence he “will not be silenced” defeats irreparable harm, stating “Please! That is not the law,” and explaining the injury is “official reprisal for protected speech,” not whether it succeeds in silencing the speaker. [p. 27]

The Court found that the final requirements for a preliminary injunction – balance of equities and public interest – strongly favored Kelly. It noted that protecting First Amendment freedoms is “always” in the public interest, and that “government actions in contravention of the Constitution are ‘always contrary to the public interest.’” [p. 28] It added that retaliation against Kelly “threatens retaliation against all,” and again drew on the amicus brief to explain why retired veterans’ “distinct perspective and specialized expertise” is essential to “public discourse” on military policy, warning that Hegseth’s actions would “impoverish public debate” on critical issues and “further chill the speech” of veterans. [p. 28] The Court described Hegseth’s argument that an injunction would interfere with “good order and discipline” and subject “routine mechanisms of military accountability” to “judicial veto,” as “anemic,” emphasizing a long tradition of retired service members (including elected officials) contributing to public discourse, and stating there was nothing “routine” about “punishing a sitting U.S. Senator for his views on military policy.” [p. 28-29]

Accordingly, the Court granted Kelly’s motion for a preliminary injunction.

The Court addressed Hegseth and the other defendants, stating that rather than “shrink the First Amendment liberties of retired servicemembers,” they should recognize the “wisdom and expertise” retirees have contributed over “the past 250 years,” adding that “the Founding Fathers made free speech the first Amendment” and expressing hope the injunction would help prompt a “course correction” in the DOD’s approach. [p. 29]

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