https://en.wikipedia.org/wiki/United_States_Border_Patrol_in...

> The U.S. Border Patrol has stated: "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."

I'm not convinced "the law says you can't do that" is super meaningful in 2026.