Well, enforcement is always the next step with government regulation. Here is an article from Australia:
Crackdown begins on saleyard compliance
A STATEWIDE operation targeting sheep and goat sales is being launched this week to crackdown on identification and tracing compliance, NSW Department of Primary Industries (NSW DPI) Director Agricultural Compliance, Andrew Sanger said.
“Codenamed ‘Shepherd’, the crackdown is a joint operation between NSW DPI, the Livestock Health and Pest Authorities (LHPA) and the NSW Police Service’s Rural Crime Unit,” Mr Sanger said.
“The operation will specifically target landholder and industry compliance with the National Livestock Identification System (NLIS), Australia’s key scheme for identifying and tracing livestock.
“Over a six month period authorities will be visiting both large and small sheep and goat saleyards across the State to ensure landholders are meeting their requirements under the NLIS scheme.
“NLIS compliance is taken very seriously in NSW and penalties range from $550 fines through to prosecution for more serious offenders.”
Mr Sanger said Australia is recognised globally for producing clean, safe and quality meat products.
“NLIS helps us protect our enviable reputation and is a critical biosecurity measure in quickly and effectively responding to food safety and disease incidents,” Mr Sanger said.
“NLIS is also an important tool in tackling rural crime and the theft of stock.”
Under the NLIS scheme, all sheep must be ear tagged before they are moved from any property to a saleyard, abattoir or another property. The scheme uses visually readable ear tags printed with a Property Identification Code (PIC) to identify mobs of sheep and goats.