It's pretty amazing how staunchly against this the heads of the GOP are when the majority of Americans and lots of CEOs/top 1% members have come out in favor of raising their taxes.
Even the rich know that if their taxes are too low it will lead to economic problems far worse for them than higher tax rates provide. They want gov't to step in and do it for them.
Mitt missed a big opportunity to seize on this and promote tax cuts for everyone but the wealthy and tax raises for them to pay for it. But nope.