Good point. The numbers are not in our favor.
Start - Cross check employment, cell phone and land line calls, postal records to
foreign addresses - they photo every piece of mail - bank records, freebies cut
off, voting records, money payed for their housing, SS payments in/out. Step by
step. Should be enough data to stop search when assured person(s) are citizens.
Let the computers do the work.
Lots of ways to get a paper trail. Send them a registered letter
advising them to leave while the leaving is good with warning of confiscation and
lousy travel if they don’t. Stopping NGO payments is a good start.