Originally Posted by jphripjah

I have heard ignorant officers say "You have no consitutional rights at the border."

This is contrary to the law and contrary to CBP's training of its officers. It's well settled that the 4th Amendment prohibition on unreasonable searches applies everywhere. However, courts have ruled that searches of your belongings at the border without a warrant and without probable cause are reasonable under the 4th Amendment.

Other types of searches by CBP at borders, like pat downs, strip searches, stomach x-rays, cavity searches, etc. require suspicion supported by articulable facts, or in some cases either consent or a court order, otherwise they violate the 4th Amendment.