If a judge orders Google to sell Chrome, it could dramatically upend the multibillion-dollar online search business.

The United States government has proposed forcing Google to sell off its Chrome web browser as part of measures to break up a monopoly a judge has said the company currently operates in online searches.

The Justice Department and a group of states proposed a raft of changes to the business practices of Alphabet Inc.’s Google — including a forced sale of the company’s Chrome web browser — in the wake of a landmark ruling that the tech giant illegally monopolized online search.