Per the court filing in this case: "Liebb said when he asked why they were being detained, an officer tightened his handcuffs and responded: 'This isn’t county or state. We are [H]omeland. You have no rights here.'”
Whether as a visitor or as a citizen, you now have rights under the law exactly up to the point where fascist goons serving an authoritarian regime decide you don't.
https://www.theguardian.com/us-news/2025/mar/22/united-pilot-attacks-passenger