(CNN) When Democratic Rep. Adam Schiff of California decided to join the House Intelligence Committee in 2008, leading an impeachment inquiry one day wasn't quite what he anticipated.

"He wanted to go on the Intelligence Committee for two principle reasons: Number one, it was bipartisan, and number two, it was quiet," said former Democratic Rep. Steve Israel of New York, a close Schiff friend. "And so I often say to him, 'How did that work out for you, buddy?' "

For Schiff, it did not work out as expected.

"It feels at times like it's being in the eye of the hurricane," Schiff told CNN's Gloria Borger. "You can never tell when you're going to step out of the eye and into gale-force wind."

Those winds have often come from the White House, with President Donald Trump calling for him to resign and even be investigated for treason.

"I can't even keep up with the President's Twitter attacks on me," Schiff said, adding that his staff no longer bothers to send him all of the President's tweets. "They're just too numerous."

The attacks only intensified after Schiff changed his mind about impeaching the President . During the Russia investigation, Schiff hadn't been sold that impeachment was the best course of action.

"I always thought the strongest argument for impeachment was also the strongest argument against it, which is what does it say if we don't impeach -- what does it say about whether this kind of conduct is compatible with the office? But what does it say if he's tried and acquitted?" Schiff asked.

"What made this a necessity for me and so many of my colleagues is that if the President believes that he can abuse his office, the power of that office, he can fail to defend our national security and there is no accountability, even if the accountability is only in the House, that's too dangerous a prospect to persist," Schiff said.

House Intelligence Committee Chairman Adam Schiff, a California Democrat (center), followed by Rep. Mike Quigley, walks out to talk to reporters on Capitol Hill in Washington earlier this month.

Path to Washington

Ironically, it was a previous presidential impeachment that brought Schiff to Congress.

After attending Harvard Law School, Schiff worked as an assistant US attorney in California, where he persuaded a jury to convict an FBI agent of selling secrets to the Russians. Then he was elected to the California state Senate before setting his sights on the US House.

His incumbent opponent was James Rogan, one of the leaders of the campaign to impeach then-President Bill Clinton.

"Mr. Rogan's priority has always been engaging in these national partisan ideological crusades and ignoring the business at home in the district. And I don't think people value that," Schiff told CNN during the race in 2000.

Schiff was right. He won what at the time was the most expensive House race in history. It played to Schiff's competitive nature.

"I played quarterback, Adam played on the line for his team, and in one play Adam literally ripped the jersey off my back, and that's Adam," said longtime Schiff friend and law school classmate Karl Thurmond. "And so, yes, he is very ambitious, he is very competitive but not in a cutthroat or a backstabbing way."

Schiff kept a low profile during his early years in Congress, rising to prominence in 2014 as one of the Democrats on the Republican-led committee investigating the Benghazi attack

Speaker of the House Nancy Pelosi holds a news conference with Schiff on Capitol Hill in Washington, DC, in October.

A Republican target

As chairman of the Intelligence Committee, he's now facing off with Republicans again. Some, including Rep. Steve Scalise, a Louisiana Republican, have accused him of running a "Soviet-style impeachment process."

"It's behind closed doors ... with a chairman who has lied three times to the American public looking them in the eye. And somehow we're supposed to trust what comes out of that?" said House Republican leader Kevin McCarthy, who like Schiff is from California.

Just weeks ago, Republicans tried to censure Schiff.

"My Republican colleagues, finding they lack the courage to stand up to this unethical President, have consoled themselves by attacking those who do and that's a sad reality but it is where the House GOP is," Schiff told Borger. "Kevin McCarthy will do whatever Donald Trump asked him to do. He'll merely ask how high he wants McCarthy to jump and then McCarthy will jump."

Republicans have criticized Schiff for -- among other things -- parodying Trump's Ukraine phone call during his opening statement at a September hearing.

"I'm going to say this seven times so you better listen good. I want you to make up dirt on my political opponent, understand? Lots of it," Schiff paraphrased Trump as saying.

The President was not amused.

"Shifty Schiff is a double corrupt politician. He took my words on the phone call and they were so good. He totally changed them."

"It's clear it's mocking the President and just as clearly the President doesn't like being mocked, but it was a mafia kind of ... organized crime shakedown," Schiff said in defense of his statement. "If the President wasn't attacking me about this, he'd be attacking about something else."

Israel said of Schiff: "He's got very thick skin."

He knew when he went into this that he was going to be vilified," Israel said.

He gets through it, according to Israel, with what many might not see: a "goofy" sense of humor.

"He loves funny movies. He can take you from the first word of 'The Big Lebowski' to the final scene of 'The Big Lebowski,' " Israel said.

Any words from "The Dude" that might come up most in political life?

Says Schiff: "I have to say it's the line, 'No, you're not wrong. You're just an a--hole.' "