Critics argue that farmers lawfully use large quantities of the fertilizer, and as of 2009, only Nevada and South Carolina require identification from purchasers.
法案的批评者认为，农民本来就需要大量使用化肥，购买化肥也是合法的行为，截至2009年，只有内华达州和南卡罗莱纳州要求买方提供身份证明。