Bob Barr, Bane of the Right?

He invoked Goldwater and Reagan and even said he would support Bush's program if it had congressional support. But Barr was a prophet without honor in his own land. "Why does the FISA law trump the Constitution?" one woman demanded of him. "Why should a non-elected, non-briefed judge be able to veto our national security?"

Conservatives were sore that Barr put his disagreements with Bush in the pages of Time magazine. Another questioner scolded Barr for agreeing to introduce an Al Gore speech that was also sponsored by MoveOn.org. "I have nothing whatsoever to do with them," Barr pleaded.

Still, the old prosecutor managed to elicit a crucial concession from Dinh: that the administration's case for its program comes down to saying "Trust me."

"None of us can make a conclusive assessment as to the wisdom of that program and its legality," Dinh acknowledged, "without knowing the full operational details. I do trust the president when he asserts that he has reviewed it carefully and therefore is convinced that there is full legal authority."

The crowd was against him, but Barr, leaving the event, claimed the clear conscience of a conservative. "I just told them what they need to know," he said.

Barr elaborated on his conundrum. "It's difficult," he acknowledged. "It's not about sex, which was very easy to explain."

Love him or hate him, you have to give Barr high marks for consistency. "Whether it's a sitting president when I was an impeachment manager, or a Republican president who has taken liberties with adherence to the law, to me the standard is the same," he said.

And, besides, who cares about a little criticism?

"No more than normal," Barr reported.

Political researcher Zachary A. Goldfarb contributed to this report.