Alphabet's Google is facing a U.S. antitrust trial in Alexandria, Virginia, aimed at curbing its alleged monopoly in online advertising. The U.S. Department of Justice seeks the divestiture of Google's ad exchange, AdX, which charges a 20% fee to publishers for ad auctions. Judge Leonie Brinkema, who previously ruled Google's web advertising monopolies unlawful, will oversee the trial. Google argues that the DOJ's demands would create operational chaos for advertisers and publishers alike.