John Avlon writes in CNN that Jeb Bush is not the only Republicans who no longer wants to be constrained by Grover Norquist's anti-tax pledge:
The angry defensiveness of the statement, the thinly veiled threats and thuggish imagery, has all the signs of someone who worries that he might be losing a rational argument.
As it turns out, Norquist has reason to be concerned. It's not just Jeb Bush. A growing number of Republicans are rejecting his pledge. Oklahoma conservative Sen. Tom Coburn called the pledge's effective veto of deficit reduction plans "ridiculous" when talking with Erin Burnett on "OutFront."
Sen. Lindsey Graham of South Carolina on Tuesday declared his independence from the pledge, saying, "We're so far in debt, that if you don't give up some ideological ground, the country sinks."
Add to those voices seven other Republican U.S. senators -- from Maine's Susan Collins to Iowa's Chuck Grassley to Wyoming's John Barrasso -- and 11 Republican House members, ranging from centrist New Yorker Richard Hanna to tea party Floridian Allen West.
The bottom line is that a growing number of Republicans are deciding to throw off the ideological straitjacket to get serious about actually reducing the deficit and the debt. It is a courageous move at a time when cultlike group-think dictates that the pledge must be signed or your political career is dead in the water.