FBI Director Christopher Wray told agency staffers that he was concerned about “a potential conflict of interest” involving the selection of the bureau’s new headquarters in Maryland, according to an email obtained by NBC News. On Thursday, the General Services Administration confirmed that the FBI’s new home would be in Greenbelt, about 13 miles northeast of Washington, seeming to bring to an end a drawn-out and politically fraught site selection process. Two other finalists were Springfield, Virginia, and Landover, Maryland. In his unusually pointed letter to staffers, Wray said the FBI has “concerns about fairness and transparency in the process...