lol. Didn't know he was such a Dewhurst fan. This has to be red meat more than actual conviction, because the cognitive dissonance is remarkable.
This is actually a pretty popular idea on some of the fringes of the right.
Mike Lee also supports it. It seems to be a specific "fringest of the Tea Partiers" thing.
Besides the basic political gain of repealing that amendment (the GOP could pick up quite a few Senate seats), I don't see why so many grassroots populist Tea Party activists support it. I would assume they would call any Democratic attempt to repeal the same amendment a "powergrab" by "the elites."