I believe the encryption restrictions were relaxed in 1998.
However, certification for import/export of nuclear weapons and other dangerous goods was still needed for strong encryption (such as phone SIM cards) as recently as 2006. To get on that list of people who could legally transport SIM cards not for personal use over the US border, you needed the same background check and government clearance as someone transporting enriched uranium.
I believe the encryption restrictions were relaxed in 1998.
However, certification for import/export of nuclear weapons and other dangerous goods was still needed for strong encryption (such as phone SIM cards) as recently as 2006. To get on that list of people who could legally transport SIM cards not for personal use over the US border, you needed the same background check and government clearance as someone transporting enriched uranium.