The United States Supreme Court disagrees with you but they don't have 9000 posts on PP so I'm sure they're wrong. The Supreme Court was established by the Constitution to be the arbiter and interpreter of the constitution. The delegates that constucted the constitution in 1787 during those 100 days new it wasn't a perfect document and it would need interpretation as times changed. That's the purpose of the US Supreme Court. To look at a law and determine if it's constitutionally sound. They have done this with DUI checkpoints and they say that it doesnt violate the 4th Amendment.

I get it just fine...but thanks for your concern anyway.

Noone has claimed that checkpoints stop drunk drivers. It removes them from the road.