Cutting off their federal money will get their attention.
Sending them off to jail for conspiring to violate immigration law will really, really get their attention.
It’s fun for them to talk big and posture for their leftwing No Borders supporters. But the prospect of being convicted and serving time is gonna give them a severe case of dry mouth.
And deny them bail on the grounds that they will continue to obstruct justice while waiting for trial. They are habitual offenders, after all.