The Navy Yard massacre won’t revive the gun debate in Congress for a simple reason. There is no gun control agenda this side of a total ban and confiscation that would have stopped Aaron Alexis. The Toomey-Manchin bill could have passed Congress unanimously. The assault weapons ban could still be in place. Gun-controllers could have achieved their long-ago goal of barring the private purchase of handguns. And every step of his mayhem at the Washington Navy Yard would have been unimpeded.

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