BRUSSELS (AP) — The European Union called Tuesday on U.S. President Joe Biden to help draw up a common rule book to rein in the power of big tech companies like Facebook and Twitter and combat the spread of fake news that is eating away at Western democracies.

In a speech to the Davos World Economic Forum, European Commission President Ursula von der Leyen urged the Biden administration to join forces against "the darker sides of the digital world," which she said was partly behind the "shock" storming of Capitol Hill on Jan. 6.

"The business model of online platforms has an impact and not onl...