Thanks for these. From the first article, according to a CBP spokesman: “Although motorists are not legally required to answer the questions ‘are you a U.S. ci

Thanks for these. From the first article, according to a CBP spokesman: “Although motorists are not legally required to answer the questions ‘are you a U.S. citizen and where are you headed,’ they will not be allowed to proceed until the inspecting agent is satisfied that the occupants of vehicles traveling through the checkpoint are legally present in the U.S.” That suggests to me that CBP, at least, sees these stops as rather custodial.