FILE – This July 9, 2019, file photo shows a sign outside of the Twitter office building in San Francisco. Social media companies have vowed to tackle misinformation in politics. Social media companies have vowed to tackle misinformation in politics. But when Britain’s Conservative Party changed its press office Twitter account Tuesday, Nov. 19, to look like a fact-checking site during a televised debate, the only consequence was a promise from Twitter to take action if they did it again. (AP Photo/Jeff Chiu, File)
