The easiest targets in order of ease of capture are:
1. DACAs, they have given all their DATA and info and they are unlikely to change it significantly enough to avoid being caught.

2. All the twitter undocs who proudly announced to the whole internet and ICE that they are illegal. All ICE has to do is request their information from twitter, who has helpfully provided it to other law enforcement agencies in the past.

3. They could also go to to facebook and get the information there.

This is why I have zero social media and I use Tor behind a VPN from russia.

Really the main thing here is keeping your head down, not being an ass, not drawing attention to yourself. Not speeding. Not drinking and driving. Yes that includes wet reckless. No marijuana. No drugs.

Everyone's like but DJM they dont keep records!! Your face is an ID now. If you're on camera, you are on record.