FORT LAUDERDALE, Fla. — Lindsey Halligan, a former White House aide for President Donald Trump who as a top federal prosecutor in Virginia pursued cases against the president’s opponents but ultimately left the job after her appointment was deemed unlawful, is facing an investigation by the Florida Bar. Lindsey Halligan, a Trump-appointed former acting US attorney, faces investigation by Florida Bar The Campaign for Accountability, a nonprofit watchdog that had sought the bar inquiry, published a letter on its website in which a representative of the Florida Bar confirmed that the organization had an investigation pending. A spokesperson for the Florida Bar confirmed to The Associated Press that there was an open file on Halligan but declined to comment further because disciplinary cases are confidential. Halligan did not immediately respond to a request for a comment about the investigation. The complaint centers on Halligan’s brief but turbulent time as the acting U.S. attorney for the Eastern District of Virginia, historically one of the Justice Department’s most elite and prestigious prosecution offices. Halligan, who had served …