This is obviously how this is going to be used and anyone thinking otherwise is naive. They are building a system to track dissenters. First it will be used to track down illegal immigrants to justify its existence. We are pretty much going down the "first they came for.." list.
I don't think they even need to be illegal immigrants based on what we are seeing so far with detentions and deportations.
For example Rümeysa Öztürk (the topic popped up on a now-flagged submission, I'm not sure the etiquette about linking to that at this point). Mahmoud Khalil is another one (permanent resident).