I don't think you've understood the post at all. There's nothing in my post about stopping them from exercising border control. There's nothing about where th

I don't think you've understood the post at all. There's nothing in my post about stopping them from exercising border control. There's nothing about where that might take place. The point is, if you have enforceable laws then those that the laws are being enforced on also enjoy the rights available to them under the same laws. A search (of electronic equipment) requires cause (this is why the warrent is needed), and detainment also requires some degree of cause. Arbitrary search and detainment is what we ascribe to totalitarian nations.