Then don’t let him in. Then, if he’s found, he’s in violation of US law and we can arrest/imprison him.
By letting him in and then tracking him on a claim that he is ‘dangerous’ lets the government use that excuse for *ANYONE* that could possibly end up as ‘dangerous’.
Like militias, global warming deniers, those that oppose the ruling party’s continued rule, etc.
Here’s a thought:
Have you ever considered that “they” may put that device on your car to protect you while you’re driving about b/c the “other” they may be tracking you?
Also- They’re already here and there’s no need to look for him at the border.