National Livestock Identification Act - Amends the Animal Health Protection Act to direct the Secretary of Agriculture to establish an electronic nationwide livestock identification system to enhance the Department of Agriculture's response to outbreaks of livestock disease. Requires that such system be capable of tracing, within 48 hours, individual animals from birth to slaughter.
Authorizes the Secretary to: (1) provide producer participation assistance; and (2) appoint an international panel of scientific experts to review the Department's response to an outbreak of livestock disease.