While patrolling for illegal border crossings and drug dealers, agents of the U.S. Border Patrol spotted 15 to 20 people being loaded into a van at the rear entrance to a restaurant a just a few minutes from the border. The agents landed, entered the restaurant without warrant, and conducted a search. The agents obtained a warrant, and searched the Laundromat next door. Agents found 23 men and 15 women from the Philippines and 10 men from Mexico lacking proper documentation. Charges were brought against the restaurant and Laundromat. The store owners claimed that the agents conducted an unreasonable search and seizure. What arguments can the agents make? Provide examples, laws, or other relevant information to support your answer.