(a) Pursuant to section 8e [7 U.S.C. 608e–1] of the Agricultural Marketing Agreement Act of 1937, as amended [7 U.S.C 601–674], and Part 944—Fruits; Import Regulations, the importation into the United States of any avocados, except the Hass, Fuerte, Zutano, and Edranol varieties, is prohibited unless: