I can see this part of the law is going to be observed more in the breach than in the observance, and country people being as they are, almost nobody is going to snitch. A little more contempt for overbearing feds is always a good thing.
It seems Digital Angel already thought of that and circled the wagon.
They already went and made partnerships and business deals with feedlots, Vets, and multiple types of Ag businesses where you won't be able to do any business without being scanned or providing premise information.
http://animalscience.ucdavis.edu/animalID/FactSheets/ProviderTable.pdf