Author E. Jean Carroll leaves the Thurgood Marshall United States Courthouse in lower Manhattan, Sept. 6, 2024. Andrew Boutros, the Trump-appointed U.S. attorney for Northern Illinois, has opened a criminal investigation into Carroll, the 82-year-old former magazine writer who accused President Trump of sexual assault, according to a person with direct knowledge of the situation. (Dave Sanders/The New York Times) By GLENN THRUSH and BENJAMIN WEISER The Justice Department has opened a criminal…