Texas Gov. Greg Abbott on Tuesday ordered National Guard troops deployed at the U.S.-Mexico border to help state police make arrests, expanding the Guard’s authority. The Republican governor sent a letter to Maj. Gen. Tracy Norris, the Adjutant General of the Texas National Guard, to help the state’s Department of Public Safety (DPS) make arrests of individuals who face state charges. “By virtue of the power and authority vested in me by the Constitution and laws of the State of Texas, I hereby order that the Texas National Guard assist DPS in enforcing Texas law by arresting lawbreakers at the border,” Abbott’s letter (pdf) said. About a month ago, Abbott said during a border security summit that illegal aliens who commit criminal trespassing charges or other state offenses, including drug smuggling and trafficking, will be arrested and jailed. The governor also announced a plan to build sections of the border wall …