More visible are the migrants looking to cross the border illegally into the United States. Because the California border is all but sealed since the Border Patrol's Operation Guardian, many migrants have come to the Arizona border between Agua Prieta and Nogales, with Naco in between. This changed Naco starting from the 1990s as it became one of the preferred routes for “coyotes” (also called polleros or enganchadores) or smugglers who offer to take migrants across. Providing lodging for migrants is a growing business in Naco, where the rate is between 200 and 300 pesos per night per person. Many of these lodgings are filled with people who cannot cross the border. One example is the Hospedaje Santa María, which is a run-down, two-story building.