Mexican soldiers crossed clear line The nation's border czar has concluded that Mexican soldiers who held a U.S. Border Patrol agent at gunpoint in August did so after bypassing a barbed-wire fence and other clearly visible barriers to cross into the United States, contradicting claims by the State Department and the Mexican government that the soldiers were simply lost. U.S. Customs and Border Protection (CBP) Commissioner W. Ralph Basham, in a private letter to the National Border Patrol Council Local 2544 in Tucson, Ariz., described the Aug. 3 border incident as a "potential lethal encounter involving four Mexican armed military soldiers north of the international boundary." "There is a barbed-wire fence and new tactical infrastructure within sight that marks the borderline where the incident took place," Mr. Basham said. "Our uniformed agent, in a marked Border Patrol vehicle, identified himself in both English and Spanish." He also described the tactics used against the agent, including the pointing of automatic rifles at him, as "unacceptable," adding that the incident had been "thoroughly documented by the Department of Homeland Security." He said the matter has since been sent to the State Department "with a request for diplomatic action." At the time of the incident, the State Department described the incursion as a misunderstanding, saying the Mexican soldiers did not know where they were and needed to make certain that the detained agent was who he said he was. It was the same general statement the department had made in dozens of other suspected incursions by members of the Mexican military....