ASSOCIATED PRESS MEXICO CITY - Mexico has sent a diplomatic note to the United States objecting to an alleged incursion into Mexican territory by U.S. Border Patrol agents trying to extinguish a fire, the country's Foreign Relations Department said Tuesday. The incursion allegedly took place on Monday, as Border Patrol agents stationed in Sonoita, Ariz., were trying to quash a brush fire on the U.S. side that quickly spread into Mexico, the department said. The Foreign Relations Department said it was notified of the incident on Tuesday by the U.S. Embassy in Mexico, which reported that the border agents immediately...