From your own link:
> Border Patrol, nevertheless, cannot pull anyone over without "reasonable suspicion" of an immigration violation or crime (reasonable suspicion is more than just a "hunch"). Similarly, Border Patrol cannot search vehicles in the 100-mile zone without a warrant or "probable cause".
Unlike the airport that 100 mile zone is not a free for all. They can ask you questions. You are free to not answer them. You haven't violated any laws by not doing so. Unless you crossed a border very recently you can tell CBP to kick rocks.
> In practice, Border Patrol agents routinely ignore or misunderstand the limits of their legal authority in the course of individual stops, resulting in violations of the constitutional rights of innocent people. These problems are compounded by inadequate training for Border Patrol agents, a lack of oversight by CBP and the U.S. Department of Homeland Security, and the consistent failure of CBP to hold agents accountable for abuse. Thus, although the 100-mile border zone is not literally "Constitution free," the U.S. government frequently acts like it is.
Scream "AM I BEING DETAINED!" all you want, you might win a court case. You still got your butthole probed.
Unlike the airport that 100 mile zone is not a free for all. They can ask you questions. You are free to not answer them. You haven't violated any laws by not doing so. Unless you crossed a border very recently you can tell CBP to kick rocks.