General Discussion

The problem of selling out one's virtues and refusing to do what's best for others is thousands of years old.

Akrasia is also referred to as "weakness of will" or "incontinence."
Akrasia describes the state of mind in which an individual freely chooses a course of action while simultaneously believing that a different action would be better.

Akrasia is not about ignorance, according to Socrates. The person understands what is considered the right or better course of action.

It is a weakness of willpower to resist a temptation.
What temptation, you may ask? To love one's job and status more than one's neighbor or, in these dissenting republican senators' cases, love their jobs and status more than their constituents.

Aristotle says that akrasia can be explained by the incorrectness of one's best judgment rather than a failure of the agent to act according to her best judgment. When an agent's best judgment is a false belief, it does not have the power to compel one which Socrates attributed to correct knowledge of what is genuinely best.
IOW, they have neither the intelligence nor the willpower to be virtuous. They've sold out their wills, and therefore their souls, to evildoing to maintain worldly power.

As Jesus said before them:
37 But let your communication be, Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil.
https://www.biblegateway.com/passage/?search=Matthew%205%3A37&version=KJV
IOW, be honest and not an equivocator.

Me, I call senators who spoke against the bill yet voted FOR it all kinds of things like sellouts, cowards, and whiny little bitches.