The US government formally proposed a partial breakup of Google on Wednesday, urging a federal judge to force a sale of the company’s Chrome web browser after a landmark ruling this year finding that Google had violated US antitrust law with its search business.

Alphabet Inc.’s Google would be forced to unwind its partnership with artificial intelligence startup Anthropic if a federal judge accepts the US Justice Department’s proposal to resolve a landmark antitrust case over online search.

U.S. regulators want a federal judge to break up Google to prevent the company from continuing to squash competition through its dominant search engine after a court found it had maintained an abusive monopoly over the past decade.