Having grown up in Iowa, I have to file a public protest about the negative connotation about pigs. Pigs are actually smart animals; turkeys might be a better example.

NSF will be responsible if fraud was involved. Also you look for the intent of the buyer. If the buyer engages in conduct or makes representations that show an intention to assume the seller's liabilities in whole or in part, a court may find the buyer responsible. Sorry, NSF said they were going to look into this. SA has hung around for this.