Yes you do have to provide pic ID for these cert customs letters. My mailman always delivers cert mail, he was not delivering the one from US customs, just keep getting the reminders, then my guess the PO sent it back.

This is just a newer tactic customs is using, scare or not, Im not giving them my DL 0r SS#! Again Im no lawyer, but that sure sounds like proof to me. Maybe they really are trying to build a drug importer list, NO ONE really knows, except the DEA.

Drew