Sen. Mark Kelly calls Pentagon investigation into his remarks a move to chill military dissent

Democratic Senator Mark Kelly of Arizona has characterized the Pentagon’s escalating investigation into his comments urging military personnel to refuse unlawful orders as an attempt to suppress dissent within the armed forces.

“This is just about sending a message to retired service members, active duty service members, government employees — do not speak out against this president or there will be consequences,” Kelly told reporters Tuesday following a classified briefing on controversial military strikes targeting alleged drug boats in Latin America.

The Pentagon confirmed Monday that Defense Secretary Pete Hegseth’s office has elevated what began as a preliminary review into an official command investigation concerning “serious allegations of misconduct” by Kelly. The senator claims the Department of Defense did not notify him directly of the investigation because “what they really care about is the public message.”

While command investigations are routinely used to examine potential non-criminal misconduct in the military, they are rarely directed at retired service members, and even more uncommonly against sitting members of Congress. This unusual step heightens existing tensions between Kelly—a former Navy fighter pilot and astronaut—and the Trump administration’s Defense Department.

The investigation comes amid increasing congressional scrutiny of U.S. military operations targeting boats suspected of drug smuggling in the Caribbean Sea and eastern Pacific Ocean, operations that Kelly and several colleagues have publicly criticized.

Kelly’s legal team has forcefully rejected the investigation’s legitimacy. In a letter to the Pentagon, his lawyers argued “there is no legitimate basis for any type of proceeding” and warned that “any such effort would be unconstitutional and an extraordinary abuse of power.”

The investigation was initiated after President Donald Trump accused six Democratic lawmakers, including Kelly, of sedition “punishable by DEATH” after they appeared in a video encouraging troops to refuse unspecified illegal orders. Hegseth has singled out Kelly because, unlike the other lawmakers in the video, he formally retired from the military and remains under Pentagon jurisdiction. Hegseth claimed “Kelly’s conduct brings discredit upon the armed forces.”

The Defense Department has suggested it could potentially recall Kelly to active duty for court-martial proceedings, though legal experts have challenged this assertion. Many specialists contend Kelly committed no illegal act, and that as a member of Congress, he cannot be prosecuted by the executive branch.

Todd Huntley, a retired Navy captain and judge advocate general, believes the Pentagon’s approach indicates they recognize limits to potential disciplinary actions. “It’s a realization that they are not going to be able to court-martial him and that is what this is setting up is some sort of administrative action,” Huntley said. He suggested the most likely outcome would be a non-punitive letter of censure—a largely symbolic measure with minimal practical impact given Kelly’s retired status.

The controversial video, released in November, featured Kelly alongside other Democrats with military or intelligence backgrounds: Senator Elissa Slotkin and Representatives Jason Crow, Chris Deluzio, Maggie Goodlander, and Chrissy Houlahan. In the video, Kelly specifically stated that military personnel “can refuse illegal orders,” while his colleagues emphasized the importance of upholding American laws and the Constitution.

Though the lawmakers did not reference specific operations, their message coincided with both the controversial boat strike campaign and discussions about deploying National Guard troops to American cities. The ethical questions surrounding military operations became particularly relevant following reports of a follow-up strike that killed two survivors who were clinging to wreckage after an initial attack—actions that some legal experts and lawmakers contend violated international laws of armed conflict.

The Trump administration and several Republican lawmakers have defended these operations, arguing they are justified as part of efforts to combat narcotics trafficking and that the United States is engaged in an “armed conflict” with drug cartels.

When announcing its investigation into Kelly, the Pentagon cited federal law prohibiting actions that interfere with “loyalty, morale, or good order and discipline of the armed forces.”

Kelly, for his part, remains defiant. “They’re trying to shut people up,” he told reporters on Tuesday. “But in this case, they picked the wrong guy. So I’m not going to shut up about this.” The senator maintains that his statements upheld his constitutional oath rather than undermined it.