Probably true, but good luck with that.

As my grandfather said: "You might be right, but you don't want to be dead right."

CBP already have extra authorities due to border control because crossing the border is not a constitutional right.

The most egregious expansion was the declaration that all territory within 100 miles of the border is 'authorized' for all CBP's nonsense. That happens to cover about 90% of the US population.

There is a lot of anguish about the intelligence agencies doing their jobs against very serious threats, including Nuclear, Biological, Chemical. Meanwhile the real damage to civil liberties is from the CBP and INS, who literally storm homes every day, and engage in this kind of 4th amendment trashing.