BISBEE — Motorists along three of Cochise County’s major north-south throughways may have noticed the recent disappearance of some familiar landmarks — the Border Patrol checkpoints that had long been fixtures on highways 80, 90 and 191. A Border Patrol spokesman at the agency’s Tucson Sector headquarters said Monday that because the management of checkpoints is an operational issue, he could not comment on why or precisely when the permanent revision points in Cochise County had been dismantled. A spokeswoman at Congressman Jim Kolbe’s office in Washington, however, said that any removal would be appropriate given a law prohibiting long-term...