The death of Sen. Mitch McConnell’s billionaire sister-in-law is being investigated as a crime weeks after her body was pulled from her submerged car in Texas. Angela Chao, 50, was found dead in her sinking vehicle in a pond on a ranch in Johnson City, near Austin, on Feb. 11. “Although the preliminary investigation indicated this was an unfortunate accident, the Sheriff’s Office is still investigating this accident as a criminal matter until they have sufficient evidence to rule out criminal activity,” the Blanco County Sheriff’s Office wrote in a Thursday letter to state Attorney General Ken Paxton, according to...