President Donald Trump issued an executive order late Thursday night that would end collective bargaining for any federal employee he determines is working on matters of national security.

The order would impact collective bargaining rights for nearly a million federal workers, especially those at the U.S. Departments of State, Defense, Justice, and Health and Human Services. The executive action could also impact the Centers for Disease Control and Prevention as well as U.S. Immigration and Customs Enforcement.

Following the announcement, the BlueGreen Alliance issued a statement from Executive Director Jason Walsh:

“This is an all-out assault on the fundamental rights of working people and exposes nearly a million federal workers to further attacks from the Trump-Musk regime. And let’s be honest, that is their goal. Trump isn’t ending collective bargaining to protect national security—he’s busting federal unions because he’s a thin-skinned autocrat who can’t handle legitimate criticism from American workers. With this attack on civil servants, Trump is stripping away the constitutional rights of workers so he and his co-president, Elon Musk, can fire anyone who doesn’t agree with them.”