The Justice Department filed assault charges Tuesday against a Venezuelan immigrant shot by a federal immigration officer in Austin. An unsealed affidavit says the man, Wilber Garces Perez, struck a U.S. Immigration and Customs Enforcement officer in the torso with his vehicle’s rearview mirror while fleeing the scene of a traffic stop on Sept. 20. He then led that officer and another on what was described as a high-speed chase.