SINCE THE 2016 ELECTION,SENATOR MARK Warner has been Silicon Valley's most active and vocal watchdog on Capitol Hill. Warner, a Virginia Democrat, vice chairman of the Senate Committee on Intelligence and a former telecommunications venture capitalist, published a white paper last year proposing a variety of legislative curbs on the tech industry. Those suggestions included putting the onus on Facebook, Twitter and other social media platforms to identify bots and foreign election interference. Warner also has bipartisan co-sponsors for a variety of legislation aimed at curbing tech, including the so-called Honest Ads Act, which would require Facebook, Google and other platforms to be transparent about who is paying for political ads.
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