Hudson the agriculture dog alerts on a bag at Washington Dulles International Airport on Thursday, Jan. 19, 2012. Hudson is trained to alert on food. While many foodstuffs are permitted, some food from some countries is not allowed into the United States because it can potentially introduce bacterias, mold or illness. (Barbara L. Salisbury/The Washington Times)

Photo by: BARBARA L. SALISBURY

Hudson the agriculture dog alerts on a bag at Washington Dulles International Airport on Thursday, Jan. 19, 2012. Hudson is trained to alert on food. While many foodstuffs are permitted, some food from some countries is not allowed into the United States because it can potentially introduce bacterias, mold or illness. (Barbara L. Salisbury/The Washington Times)