The article states "existing foreign students must transfer or lose their legal status"; this injunction would appear to pause that.

The semester is already over, many of them went home. They'll simply be refused when they try to come back.

That's a real issue. If you're on a student visa, and were planning on coming back in the fall, leaving the US for the summer may be a bad move. Entry to the US can be denied arbitrarily. Deporting someone is harder.

> Deporting someone is harder.

It used to be harder and mostly seems to be a matter of ICE finding the right door to break down now.

Or the wrong one.

They've got a deportation order, so somebody is being put on a plane to El Salvador. Whether the name of the person being deported matches the name on the deportation order is another question, but not one ICE seems bothered by anymore

Undergrad Buttle better watch out...

You mean Tuttle, right? ;-)

Deporting someone is just a matter of grabbing them off the street and shipping them out to El Salvador before the courts hear anything about it.

Not only refused, they may be locked up for a couple of weeks, as has happened to various tourists.

Sure, I was locked up by DHS/immigration, and I am a US citizen. CBP/ICE/HSI doesn't really need much of anything to lock you up, when they did it to me they told me I wasn't even under arrest.

> Sure, I was locked up by DHS/immigration, and I am a US citizen.

Can you expand - what happened?

IANAL but there are different categories like "detained" [reasonable suspicion, for questioning] and "arrested" [probable cause], and that's why the common advice is to just ask "am I free to go", which doesn't get bogged-down on finer-grained distinctions about why you might no be.

Yes chained ("detained") in a jail cell, but not arrested, so no right to lawyer.