The U.S. Justice Department and a group of states proposed major changes to Alphabet Inc.’s Google — including a forced sale of the company’s Chrome web browser — after a landmark ruling that the tech giant illegally monopolized online search.

In a court filing Wednesday, antitrust enforcers said Google must divest Chrome, citing the judge’s earlier ruling that the browser “fortified” the company’s dominance. The agency and states said that they would also prefer a divestiture of the Android smartphone operating system. But, recognizing that Google and others might oppose that, they instead proposed a series of limits on the business unit.