This is about shipping, if someone thinks it belongs in a different category feel free to move it.
I always assumed the post office could open any mail, domestic or international. But its not true.
“4. Can Postal Inspectors open mail if they feel it may contain something illegal?
First-Class letters and parcels are protected against search and seizure under the Fourth Amendment to the Constitution, and, as such, cannot be opened without a search warrant. If there is probable cause to believe the contents of a First-Class letter or parcel violate federal law, Postal Inspectors can obtain a search warrant to open the mailpiece. Other classes of mail do not contain private correspondence, and therefore may be opened without a warrant.”
I read it from here https://gotogreatpanes.com/blog/2014/02/03/can-usps-open-my-mail/
Basically they cant open most 1st class mail unless probable cause. I wonder if coming from a legal state and going to an illegal state is enough probable cause?
What do you all think?