Right now, the moderate Democrats who run the party have a narrow and slipping hold on Congress against an opposition that relies on structural advantages, which could be mitigated, or at least undermined, with federal power. They have failed to act, and there’s no sign, so far, that anything will change.I blame my bad blog posts.If and when Democrats lose one or both chambers of Congress — and when we all face the consequences of their failure — I am confident that we’ll hear, once again, how it’s everyone’s fault but their own.