Texas man angry at US immigration policy in shooting at Mexican consulate "The sergeant was right there getting ready to put the horses away for the night," said Austin Police Chief Art Acevedo. As he held two horses with one hand, he discharged at least one round with a single-handed shot. In a statement, the Mexican Foreign Ministry expressed its "deep concern and condemnation of the incident." Acevedo said the targets indicated the attack may have been over US immigration policy. When you look at the national debate right now about immigration, that ... comes to mind. Sometimes our political discourse becomes very heated and sometimes very angry," Acevedo told reporters. President Barack Obama this month imposed the most sweeping U.S. immigration changes in a generation, easing the threat of deportation for some 4.7 million illegal immigrants. Police said they received a call at 2:22 a.m. about shots being fired in downtown Austin. No bombs were found on the suspect or in his vehicle, Acevedo said. Police examined McQuilliams' home in north Austin and said "the residence has been secured and is safe."