The U.S. House Agriculture Subcommittee on Livestock, Dairy, and Poultry held a hearing to review animal identification systems.

"I believe a mandatory system is necessary and carries with it many benefits for producers, processors and consumers," said Rep. David Scott of Georgia, and subcommittee chairman.

"A mandatory system would let us know where infected animals are, so that we could re-route transportation to prevent disease from spreading.  It would help protect producers against the spread of minor animal diseases, as well as from the devastating economic effects of such things as mad cow disease, foot-and-mouth disease and tuberculosis.  Finally, it would save the government money and provide a vital tool in maintaining the safety and integrity of the food supply, which is of utmost concern to consumers."