When is the National Rifle Association going after a politician news? When that politician is an incumbent Republican in a red state. The NRA has launched a full-scale assault on Tennessee state Rep. Debra Maggart, R-Gallatin, in an effort to have her unseated this fall. Maggart is more than just a state representative for the 45th District, which includes part of Sumner County. She is also the Republican caucus chairman, which gives her considerable clout in the General Assembly. Though the NRA routinely endorses Republicans, the gun rights organization doesn’t regularly endorse challengers to incumbent Republicans, even when the challenger...