On The Front Lines
Civil Liberties Groups File First Amendment Challenge to Trump’s National Guard Deployment, Echoing Founders’ Warnings Against Standing Armies
SAN FRANCISCO, Calif. — A coalition of free speech organizations is asking the federal courts to rein in President Trump’s unprecedented use of the military against civilians, especially as a means of silencing and punishing disfavored speech, warning that such actions echo the very abuses the nation’s Founders sought to prevent. The filing comes amid Trump’s ongoing threats to deploy troops to Memphis, Baltimore, San Francisco, Chicago, and New York City, often over the objections of state governors.
In an amicus brief before the Ninth Circuit Court of Appeals in Newsom v. Trump, The Rutherford Institute joined the ACLU, its state affiliates, and the Knight First Amendment Institute at Columbia University to challenge Trump’s June 2025 order federalizing the California National Guard and deploying active-duty Marines in Los Angeles to quell protests against his immigration raids. The coalition’s brief argues that the President’s claim of unilateral, unreviewable authority to deploy troops on American streets is “extreme, unprecedented, and incompatible with the history, traditions, and laws of the United States.”
“The Founders warned against standing armies on American soil, fearing that the military might be used not to defend the people, but to control them,” said constitutional attorney John W. Whitehead, president of The Rutherford Institute and author of Battlefield America: The War on the American People. “Deploying the military to deal with domestic matters that can—and should—be handled by local police violates the Posse Comitatus Act and crosses the line into authoritarianism.”
On June 7, 2025, President Trump invoked a rarely used statute, 10 U.S.C. § 12406, to forcibly federalize the California National Guard and deploy thousands of troops against largely peaceful protesters in Los Angeles. The protests erupted after armed federal agents carried out aggressive immigration raids, sparking public outrage. The federal government escalated the situation by unleashing military troops armed with tear gas, pepper balls, and flash-bang grenades on demonstrators that included journalists, legal observers, clergy, children, and elected officials. Trump claimed that the protests “constitute a form of rebellion against the authority of the Government.”
Five days later, the federal district court found that “[Trump’s] actions were illegal—both exceeding the scope of his statutory authority and violating the Tenth Amendment,” and thus issued a temporary restraining order to return control of the National Guard to the Governor. But a panel of the Ninth Circuit then stayed that initial restraining order pending appeal, giving high deference to the President’s authority. While this appeal has been pending, the district court ruled on Sept. 2, 2025, that the federal government also violated the Posse Comitatus Act, which forbids the use of the military for domestic policing absent express constitutional or statutory authorization.
The coalition’s brief before the Ninth Circuit stresses that: 1) History and tradition strictly limit military deployments against civilians; 2) Military policing threatens the First Amendment by suppressing lawful protests, political dissent, and association; and 3) Unchecked troop deployments risk authoritarian abuse, because the President cannot label ordinary political opposition as “rebellion” to justify military force. With 300 National Guard troops to remain deployed in Los Angeles through Election Day, the dangers of Trump’s military deployments are not theoretical: internal assessments reveal that troops’ presence in Washington, D.C. has been perceived by the public as “leveraging fear.”
Hina Shamsi, Charlie Hogle, Sean M. Lau, and other ACLU attorneys advanced the arguments in the amicus brief.
The Rutherford Institute is a nonprofit civil liberties organization dedicated to making the government play by the rules of the Constitution. To this end, the Institute defends individuals whose constitutional rights have been threatened or violated and educates the public on a broad range of issues affecting their freedoms.
