I think you're misunderstanding the difference between sobriety checks and these inland boarder checks. In a sobriety check, you retain all of your rights as a

I think you're misunderstanding the difference between sobriety checks and these inland boarder checks. In a sobriety check, you retain all of your rights as a citizen. In these boarder stops, you are treated the same as someone entering the country who does not enjoy the rights of a citizen in the country.