Under pressure from small farmers and organic consumers, the US Department of Agriculture announced on February 5, 2010, that it is suspending its controversial National Animal Identification System (NAIS) and offering a new approach to tracking animal disease and food contamination. This is a major victory for organic farmers and ranchers, who have complained that the USDA's goal of tagging every farm animal in country wouldn't do anything to prevent disease, would be unnecessary and expensive for small and organic farmers, and couldn't be enforced without violations of privacy and religion.
Already, the implementation of NAIS in Wisconsin has resulted in an Amish farmer and a small-scale cattle rancher being charged and fined for not registering, and in Michigan a cattle farmer's herd was put under quarantine and forcibly tagged when he wouldn't submit to the state's mandatory NAIS program.
You can read more details from USDA: http://www.aphis.usda.gov/publications/ ... bility.pdf
And the OCA: http://organicconsumers.org/nais_faq.cfm