WATFORD CITY, N.D. (AP) — Police chief Art Walgren knew how much the oil boom had changed this once-sleepy town when he spotted something that would have been unheard of not long ago: license plates from Sinaloa, Mexico, home to one of the world's most violent drug cartels. Before, there was little chance police would see cars here from nearly 2,000 miles away.Read more on NewsOK.com