A restricted article may be imported only at a port of entry staffed by an APHIS inspector. To find out if a specific port is staffed by an APHIS inspector, or for a list of ports staffed by APHIS inspectors, contact Permit Unit, PPQ, APHIS, 4700 River Road Unit 133, Riverdale, Maryland 20737-1236; toll-free (877) 770-5990; fax (301) 734-8700.