MSNBC's 'Morning Joe': The New Yorker's Jane Mayer reports on how Christopher Steele became involved investigating President Donald Trump's ties to Russia and how he learned the Clintons were tied to the firm employing him.
"His life is sort of a mess at this point, thanks to American politics," Mayer said about the former MI6 Russia desk chief.
"He's really kind of a whistleblower," she said. "He really believed what he was saying. He kept trying to get people to see the Russians are coming... and contrary to the conspiracy theories, mostly no one listened."