Why punishing Democrats for their gun-control sit-in is dicey territory for Paul Ryan

For now, it seems, the one lasting impact of House Democrats' 26-hour sit-in on gun control this summer is Republicans' desire to punish them for it.

But figuring out a way to do that without fanning the flames of the gun control debate — not to mention angering gun control advocates who are more and more willing to fight fire with fire — could be politically tricky.