Venture capitalist Peter Thiel has emerged as the frontrunner to chair the President’s Intelligence Advisory Board (PIAB) and is keen to use the influential position to limit the power of Amazon.com Inc. (AMZN) and Alphabet Inc.'s (GOOGL) Google, according to Vanity Fair.

Three senior White House sources told the magazine that the tech industry investor and PayPal Holdings Inc. (PYPL) founder has already been offered the chairmanship of PIAB, which is tasked with monitoring intelligence and advising the president on legalities and shortcomings. Thiel, one of the only Silicon Valley icons that publicly endorsed Donald Trump during his election campaign, has reportedly developed a close relationship with the president. Some sources even claim that Thiel has quietly been advising Trump’s administration, providing advice to incoming staff on intelligence and technology issues and helping to fill positions in the federal government. (See also: How Peter Thiel Became a Superstar.)

Various people who have worked with Thiel told Vanity Fair that he has particularly strong feelings about personal privacy and has grown irritated with how numerous tech companies are gathering information on people. Thiel’s distaste for how the likes of Amazon and Google, and to a lesser extent Facebook Inc. (FB), operate could eventually lead to action if rumors about him getting the job as chair of PIAB prove to be true.

“Peter has indicated that if he takes the P.I.A.B. position he intends to take a comprehensive look at the U.S. intelligence community’s information-technology architecture,” a senior administration aide told Vanity Fair. “He is super-concerned about Amazon and Google."

The source explained, "He feels they have become New Age global fascists in terms of how they’re controlling the media, how they’re controlling information flows to the public, even how they’re purging people from think tanks. He’s concerned about the monopolistic tendencies of [all three] companies and how they deny economic well-being to people they disagree with.” (See also: Amazon and Google: By the Numbers.)

When Vanity Fair asked this same source if Thiel is likely to assume the role, he responded: “He’s heavily leaning toward it. He feels there’s a lot of good he can do and it’s worth putting up with all the bullshit and scrutiny that will accompany his appointment.”

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