Even after at least nine children were treated for gunshot wounds at a Kansas City hospital, Missouri Republicans still won’t address the state’s loose gun laws. And that stubborn resistance to reform is irresponsible if not outright dangerous. One day after a mass shooting in Kansas City left one woman dead and 22 others injured by gunfire, including nearly a dozen minors under the age of 16, top GOP lawmakers and Gov. Mike Parson shrugged their shoulders at the calamity. From the governor to House Speaker Dean Plocher to other elected officials such as state Sen. Bill Eigel of Charles County…