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Actually, when it comes to illegal immigration, I believe they ALL (with the exception of Hunter and Tancredo) had an epiphany ... about the time the Capitol Hill phone lines melted down over the McCain-Kennedy bill.
Huck has assuredly changed his tune on that issue ... but so have the others. He has not changed on being staunchly pro-life, pro-Second-Amendment. His fiscal record in Arkansas is mixed ... too much big government for my taste ... but also pushing some broad-based income tax cuts (which no Socialist would do).
And supposedly all this makes him the "devil in the flesh" ... while Romney is now the great conservative hope ... and Thompson (co-sponsor of the McCain-Feingold censorship bill) and Hunter (who voted for the Medicare Prescription Drug boondoggle) are pure as the driven snow ... I don't buy it.