What is University of Chicago going to do in regards to restrictions on international students?

This is correct on both points. The current decision of ICE NOT to extend the online waiver further really impacts those universities that have opted not to fulfill their educational mission via in-person instruction this fall. That’s really between them and the current administration. It’s not really UChicago’s problem.

However, - and not sure whether this has been mentioned upthread - UC filed an amicus brief on the lawsuit just today.