Listen, it's pretty easy for anybody to allege all sorts of things. What's marginally harder is to meet a burden of some kind of proof when there's due process.
It should take more than "allegedly" to toss people into this Kafkaesque meat grinder.
> The attorneys said they do not know where he is and have filed a petition in federal court seeking an order barring the government from removing him from the state or country.
There is no reason to think the current Administration will not continue to use this tactic.
[0] - https://en.wikipedia.org/wiki/Detention_of_Mahmoud_Khalil
If you take a public stance - on social media, on recorded speeches in public, whatever - that supports an FTO (Foreign Terrorist Organization), you can be deported. This includes Hamas (but it has to be Hamas, not Palestine. "Free Palestine" - fine. Posting martyrdom photos of terrorists, calling for the killing of Jews or the destruction of Israel, giving out Hamas propaganda, etc - not fine.)
Prior to citizenship, you can't be imprisoned for your speech but you can be denied citizenship or a visa for it. That may mean - as is often the case - you may be facing a prison sentence in your home country. If you say, rape a 14 year old, flee to the US and declare asylum, and then get deported because you were still actively involved with an FTO or engaged in other crimes, then you get to go back home and to the prison sentence you were originally going to face before fleeing.
I'm sorry he didn't care for the West, it seems appropriate we should send him home. If he hasn't finished his degree at age 30, we are probably doing his wallet a favor.