It is illegal to label a product a 'Smithfield ham' unless it was processed within the town limits of Smithfield.

The Law Explained

Virginia takes its pork extremely seriously. The state legislature actually passed a specific law defining exactly what constitutes a genuine Smithfield ham to protect the town's lucrative and historic meat industry. It must be peanut-fed, cured, and processed within the specific corporate limits of Smithfield, or you are committing agricultural fraud.