FILE - In this March 2, 2017 file photo, Tucker Carlson, host of "Tucker Carlson Tonight," poses for photos in a Fox News Channel studio, in New York. The National Security Agency’s internal watchdog said Tuesday it would investigate allegations that the agency “improperly targeted the communications of a member of the U.S. news media” following Fox News host Tucker Carlson's claims that the NSA tried to shut down his show. (AP Photo/Richard Drew, File)