Plant material may be imported by mail free of duty for immediate exportation by mail subject to the following regulations, which have been approved by the Department of Agriculture and the Postal Service. This procedure shall not affect the movement of plant material in the internal mails through the United States:

Permit for entry. Each shipment shall be dispatched in the mails from abroad, accompanied by a yellow and green special mail tag bearing the serial number of the permit for entry for immediate exportation or immediate transportation and exportation, issued by the U.S. Department of Agriculture, and also by the postal form of Customs declaration.

Place of inspection. Upon arrival, the shipment shall be detained by or redispatched to the postmaster at Washington, DC, Brownsville, Tex., Hoboken, NJ, Honolulu, Hawaii, Laredo, Tex., Miami, Fla., San Francisco, Calif., San Juan, P.R., San Pedro, Calif., or Seattle, Wash., as may be appropriate, according to the address on the green and yellow tag, and there submitted to the Customs officer and the Federal quarantine inspector. The merchandise shall be accorded special handling only at these cities, and under no circumstances shall it be permitted to enter the commerce of the United States.

Special handling. After inspection by the Customs and quarantine officers, and with their approval, the addressee or his authorized agent shall repack and readdress the mail package under Customs supervision; endorse and sign on the package a waiver of the addressee's right to withdraw the mail article from the mails; affix to the mail article the necessary postage; and comply with any other mailing and export requirements, after which the package shall be delivered under Customs supervision to the postmaster for exportation by mail in accordance with § 145.71.

Entry not required. It will not be necessary to issue a Customs mail entry nor to require a formal entry of the shipment.