Sweeping EU Tech Rules Could Test Washington-Brussels Relations

Hey all, it’s Natalia in Brussels. Days after U.S. antitrust authorities took a swipe at Facebook Inc. as part of broader crackdown on tech giants, Silicon Valley is facing a fresh regulatory blitz from a different long-time adversary: Margrethe Vestager.

On Tuesday, the European Union digital czar and her team will propose far-reaching rules that could hit American tech giants with hefty fines, and in some extreme cases, order the companies to break apart their European units.