[wh0knows]

This is a nonsensical argument, the CBP doesn’t know if they will be sold illegally, the same way they don’t know that a company importing corn syrup AND honey is actually going to mix them and sell a counterfeit product. A bottle of corn syrup and a bottle of honey are both legal products, a third-party screen with a hidden non-advertised genuine component is also legal, it’s only afterwards that an illegal product could be made.

It’s impossible for the CBP to know if illegal activity will occur, but you are advocating seizure without due process based on the possibility of a crime.