12 congressmen need to switch their votes. But whoever does will suffer mightily not merely for voting for the hated bill, but for having flip-flopped. If the bill passes, and nothing bad happens, people will blame those congresscritters even worse than their fellows. And from what I understand, the people who voted no tend to be people facing competitive races in November.
Diogenes spent a lifetime searching for one honest man. Where are we supposed to find 12?
Well, I hate it that we have to start looking in Congress . . . .