The Associated Press PHOENIX (AP) — The Navajo Nation planned Tuesday to test a tribal law that bans uranium from being transported on its land by ordering tribal police to stop trucks carrying the mineral and return to the mine where it was extracted in northern Arizona. But before tribal police could catch up with two semi-trucks on federal highways, they learned the vehicles under contract with Energy Fuels Inc. no longer were on the reservation. Navajo President Buu Nygren vowed to carry out the plan to enact roadblocks while the tribe develops regulations over the first major shipments of uranium ore through the reservation in years. “Obviously the higher courts are going to have to tell us who is right and who is wrong,” he told The Associated Press….