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FiveThirtyEight founder Nate Silver talks with Brian Stelter about why most polls and models underestimated Trump's supports.

Brian Stelter says it is time for some serious "soul searching" after Donald Trump's upset victory.

Dan Rather, MZ Hemingway, Dodai Stewart, and Jeff Greenfield discuss what lessons journalists should learn from a bruising election year.

Opening the first "SNL" since the election, Kate McKinnon, dressed as Hillary Clinton, performed an emotional rendition of Leonard Cohen's "Hallelujah."

Brian Stelter looks at both the collective failure and lessons that can be learned from the election coverage.

Brian Stelter reports on President-elect Donald Trump's morning tweet taking aim at the New York Times.

Cristina Alesci takes a look at President-elect Donald Trump's potential conflicts of interest.

Cristina Alesci takes a look at President-elect Donald Trump's potential conflicts of interest.

Actress Diane Guerrero speaks about her family's deportation from the U.S. to Colombia when she was 14 years old.

Warren Buffett weighs in on the race he calls "like none other I've ever seen," says the U.S. economy is "softer than people think," and calls embattled banking giant Wells Fargo "a great bank that made a terrible mistake."

Things got testy between CNN political commentators Van Jones and Corey Lewandowski as they discussed Hillary Clinton's decision not to speak on election night.

The second amendment is safe under President-elect Donald Trump -- so why are gun stocks suffering?

Warren Buffett says the U.S. economy is not weak, but it is softer than many people believe. He also says the country needs to do a better job distributing its vast wealth across the population.

Past interviews reviewed by CNN's KFile reveal how Donald Trump may deal with Wall St. as president.

Richard Branson sits down with CNN's Chris Cuomo and Alisyn Camerota to discuss the aftermath of the U.S. election.

Naomi Watts sits down with CNN's Chloe Melas to talk about her new psychological thriller, 'Shut In.'

Christine Romans looks at President-elect Donald Trump's plans for taxes, infrastructure, and jobs.

Warren Buffett's Berkshire Hathaway is the largest shareholder in Wells Fargo. He spoke publicly for the first time since the bank's fake account scandal, telling CNN's Poppy Harlow he has faith in the bank and hasn't sold any shares.

Billionaire investor Warren Buffett was a huge supporter of Hillary Clinton for president, but tells CNN's Poppy Harlow he will support Donald Trump saying "it's very important that the American people coalesce behind the president." Though, Buffett notes, Trump's 4% GDP growth promise is "not realistic."

Ezekiel Emanuel, one of the architects of Obamacare, admits the administration did not do a good job selling the Affordable Care Act to the American public, but he maintains the bill has been an improvement on the health care system.