Promotion, Research, and Information Act of 1994 ( 7 U.S.C. 7101 et seq.). (18) Section 501 of the Federal Agriculture Improvement and Reform Act of 1996 ( 7 U.S.C. 7401 ). (19) The Commodity Promotion, Research, and Information Act of 1996 ( 7 U.S.C. 7411 et seq.). (20) The Canola and Rapeseed Research, Promotion, and Consumer Information Act ( 7 U.S.C. 7441 et seq.). (21) The National Kiwifruit Research, Promotion, and Consumer Information Act ( 7 U.S.C. 7461 et seq.). (22) The Popcorn Promotion, Research, and Consumer Information Act ( 7 U.S.C. 7481 et seq.). (23) The Hass Avocado Promotion, Research, and Information Act of 2000 ( 7 U.S.C. 7801 et seq.). (b) Prohibition No checkoff program shall be mandatory or compulsory. (c) Voluntary participation Producer participation in a checkoff program shall be voluntary at the point of sale.