Different conservative blogs have different pet issues -- government transparency, federal judges, Fred Thompson, to name a few.

But no issue in recent memory has united conservative bloggers like the debate over immigration. Their frustration has culminated in a full-scale revolt against the Bush administration and a Senate bill that activists say does little to solve the country's border security problems.

It's increasingly clear from Web postings and interviews with top conservative bloggers that the immigration bill has done serious damage to the president's credibility among the conservative netroots, the grassroots bloggers on the Web.

"Of all the issues the president has picked to make his hill to die on, he has picked the one that has divided his base," said Erickson, who lives in Macon, Georgia. "I am shocked by the anger and outrage out there ... You've got war against the president within the Republican party."