Warren, Biden campaigns each say Facebook 'unprepared' to handle 2020 race over ad policy

Democrats called Facebook "unprepared" to handle the 2020 U.S. presidential elections after the company's top executive defended its decision not to fact-check political ads.

Sen. Elizabeth Warren of Massachusetts and a campaign director for former Vice President Joseph R. Biden each took issue with Mark Zuckerberg, Facebook's co-founder and CEO, ...