Most of these departments have rules about how they use our data. ICE now gobbles it all up and can use it without rules by a department that operates with little regard and lots of exceptions to typical protections for citizens afforded by the constitution.
The majority in SCOTUS does not seem to care (it’s ok as long as their guy does it). Whatever rules we thought there were seem to be out the window because someone magically moved data or ICE got to do it or so on ...
Almost the entire US constitution applies to non-citizens in the country, with some small exceptions like voting and holding public office.
It's true that if you applied prior judicial standards that its crystal clear the constitution and bill of rights extend beyond just protecting citizens. Same for the law. However, with a lot of the recent rulings it seems that now "might makes right" and "if the president does it, it's not illegal".
Both the judicial and legislative bodies have ceded nearly all their power to the executive. We're in for a bumpy ride.