Section 319.59-2 - General import prohibitions; exceptions(b) Articles listed in § 319.59-3 as prohibited importation pending risk evaluation, and articles regulated for Karnal bunt in § 319.59-4(a) may be imported for experimental, therapeutic, or developmental purposes under a controlled import permit issued in accordance with § 319.6 if: (1) Imported at the National Plant Germplasm Inspection Station, Building 580, Beltsville Agricultural Center East, Beltsville, MD 20705, or through any USDA plant inspection station listed in accordance with § 319.37-8(a) ;(2) Imported pursuant to a controlled import permit issued for such article and kept on file at the National Plant Germplasm Inspction Station;(3) Imported under conditions of treatment, processing, growing, shipment, or disposal specified on the controlled import permit and found by the Administrator to be adequate to prevent the introduction into the United States of tree, plant, or fruit diseases, injurious insects, and other plant pests, and(4) Imported with a controlled import tag or label securely attached to the outside of the container containing the article or securely attached to the article itself if not in a container, and with such tag or label bearing a controlled import permit number corresponding to the number of the controlled import permit issued for such article.(c) The importation of any host crops (including seed and any other plant parts) that are for planting or capable of being planted is restricted under Subpart H-Plants for Planting of this part.70 FR 8231, Feb. 18, 2005, as amended at 70 FR 71212, Nov. 28, 2005; 72 FR 43523, Aug. 6, 2007; 78 FR 25571, May 2, 2013; 83 FR 11866, Mar. 19, 2018; 84 FR 2429, Feb. 7, 2019 83 FR 11866, 4/18/2018; 84 FR 2429, 2/7/2019