Republican U.S. Sen. John Cornyn said he is embarrassed by the lingering scandals surrounding Attorney General Ken Paxton when asked by reporters Thursday for his thoughts about the runoff primary election early next week. Paxton is seeking a third term as the state’s top lawyer and is facing Land Commissioner George P. Bush in a runoff for the Republican nomination. But the incumbent has faced a slew of controversies in the past few years, including an FBI investigation into allegations he abused his office to help a wealthy donor, a 7-year-old felony securities fraud indictment, a lawsuit from the state...