your original complaint was that you don't "believe the Democrats give one single solitary confinement rat's ass about Citizens United".
your new complaint is that the bill did not pass when "the Democrats" voted unanimously to strike down CU
so your belief that "the Democrats" did not "give one single solitary confinement rat's ass about Citizens United" is false. they did give at least one "solitary confinement rat's ass" about that (weird thing to say though)
btw, CU was passed after the 6 week period in which democrats had a supermajority. so there's that too