You might want to read the law, the Sec of State has the authority to revoke a green card for someone that they reasonably believe pose serious threats to American foreign policy. Advocating for and supporting an organization designated a terrorist organization can do just that. He can’t be charged with a crime simply for advocating that support, but the law allows his privilege to be here, ie a green card, to be revoked
Try again
Okay, you want to take deeper dive, okay, let's do it:
See, it's a thorny constitutional question: Can noncitizens be deported purely for their speech? The answer, like most things in immigration law, is a mess of statutory authority, conflicting precedents, and untested constitutional limits.
The Law as Written
Under
8 U.S.C. § 1182(a)(3)(B) and
§ 1227(a)(4)(B), noncitizens who
endorse or espouse terrorism can be denied entry or deported. “Terrorist activity” here is broadly defined--it’s not just planting bombs but even advocating for groups deemed terrorist organizations. Congress has always had wide latitude in keeping people
out, as confirmed in
Kleindienst v. Mandel, but what about kicking them
out once they’re already here?
The First Amendment Problem
Noncitizens
inside the U.S. have First Amendment rights--
Bridges v. Wixon made that clear. You can’t deport someone for saying things that a citizen could legally say. But then there’s
Harisiades v. Shaughnessy, which upheld the deportation of Communist Party members, though it leaned on
Dennis v. United States, back when we were jailing people for talking about communism.
More recent cases split. The Ninth Circuit in
American-Arab Anti-Discrimination Comm. v. Reno said First Amendment protections apply in deportation cases, while
Price v. INS went the other way, deferring to Congress on immigration matters.
Selective Prosecution and Politics
The big red flag here is
viewpoint discrimination. The executive order targets “Hamas sympathizers,” but not, say, someone cheering on Israeli bombings. The Supreme Court loathes viewpoint-based restrictions--
Rosenberger v. Rector being a prime example. And while
Reno v. American-Arab Anti-Discrimination Comm. says deportation proceedings can’t be challenged on selective prosecution grounds, it didn’t answer whether the government can
initiate deportations purely for speech.
Where This Is Headed
Trump’s plan, if implemented, would almost certainly be challenged. The courts have never fully settled whether lawful residents can be deported
just for speech, but in today’s First Amendment-friendly climate, the government’s odds don’t look great. If this goes to SCOTUS, it might finally force a ruling on whether noncitizens get the same speech protections as citizens when the government wields its deportation hammer.
Short version: It’s murky, it’s legally dubious, and if this crackdown actually happens, it’s bound to end up in the courts.
I'm not saying green card holders have never had their rights violated, but a savvy green card holder, if he or she can afford it, does have recourse, deportation isn't automatic and should never be achieved willy nilly, based on what side of the bed the judge got out of the bed in the morning.