Conservative House Republicans are taking their cues from Grover Norquist, the anti-tax crusader behind the GOP's "no new taxes pledge." Over the past two years, Norquist has become a household name, gaining notoriety for his role in shaping the Republican anti-tax dogma that rejects any additional revenues for the federal government.

But there is more to Norquist than his tax pledge. The 56-year-old activist has a surprisingly backstory that makes him one of the most fascinating — and enigmatic — characters in Washington.