I had a few different things come opened from ca to pa it was just packaging stuff so no biggie. I would make sure house is clean if it was hemp flowers. Did sender have it labeled as hemp or just flowers in a bag?
If there was a problem, it would be for the person that sent the stuff.
Does that mean the mailer sent proof that it wasn’t a legal shipment? There isn’t a requirement to do that. The mailer needs to keep those records for two years.
Under Postal Service regulations, including Publication 52, part 212, mailers are responsible for their own compliance with all laws and regulations governing mailability. Following this revision, mailers will also be responsible for retaining documentation which shows that they are complying with all such laws. A mailer is not required to present the documentation at the time of mailing, but such documentation may be requested either at that time or on a later date if there is doubt about the item’s mailability or the addressee’s ability to legally receive it. This process is consistent with existing regulations governing questions about mailability of restricted matter. See Publication 52 § 413.