Every one of them should be expelled, if non-citizens, visas canceled, and deported. If GWU doesn’t then I guess they deserve the result, likely should just close the university, the property will be worth more than the school or a degree from it.
If they are citizens, they have aligned themselves with a foreign entity hostile to the USA. They have forfeited their citizenship by that action - no trial needed.
Round them up and ship them to gaza. See how long they last.
“The Man Without A Country” comes to mind.