 Investigators are hunting for any clues about what may have driven Thomas Matthew Crooks to try to assassinate Mr. Trump. The FBI says it's investigating. It is a political act of domestic terrorism. The FBI believes Crooks, who had bomb-making materials in the car he drove to the rally, acted alone. With 350,000 homes still without power in the Houston area, almost a week after Hurricane Beryl hit Texas, Governor Greg Abbott says he's demanding an investigation.