Word of mouth in this case Rumors is the best thing going right now. Put the fear of God in them in the sense of being arrested and that means some, not all of course, will self deport. It’s a start but it’s better than status quo
ICE could use social media against them too. Heck, we can freep them, and help out! Start rumors, and fake news of raids ongoing or immanent. Done right, we could have protesters rioting where and when we want them. Spread them out, and wear them out. Get it to the point that the illegals and their enablers don't know what is real or fake news. We could even branch out and start rumors of ICE and FBI raids of certain Mosque's. The possibilities are endless.