Key story highlights: The Line D.C. hotel is no longer operating under a temporary certificate of occupancy. The permanent CO means the city will now verify that the project gets a $46 million tax break. Office of Tax and Revenue and Department of Employment Services will audit the project. Adams Morgan's buzzy Line D.C. hotel was finally issued a permanent certificate of occupancy Thursday, a milestone that will likely trigger the beginning of an audit to determine whether the hotel met...