Allegheny County’s controller could be facing charges after an altercation in a hotel hallway in Detroit this week.  Chelsa Wagner and her husband were there for a concert Tuesday night when her husband tried to get into their hotel room but didn’t have his key.  Hotel security called police, who handcuffed the man, leading to a scuffle between them and Chelsa Wagner.  Investigators say body cam footage shows Mrs. Wagner grabbing the officer, who pushed her off.  Wagner is seeking her third term as Allegheny County Controller.