U.S. Takes a New Stab at Facebook Antitrust Suit

After a judge slammed the F.T.C.’s original lawsuit, regulators returned with a more detailed case accusing the platform of being a monopoly.

WASHINGTON — The Federal Trade Commission took new aim at Facebook on Thursday, beefing up its accusations that the company was a monopoly that illegally crushed competition, in an attempt to overcome the skepticism of a federal judge who threw out the agency’s original case two months ago. The suit submitted Thursday contains the same overall arguments as the original. But the updated suit is much longer and includes more facts and analysis that the agency says better support the government’s allegations. The agency had to refile the case after the judge overseeing it said in June that the government had not provided enough evidence that Facebook was a monopoly in social networking. The judge’s decision, and a similar one he made in a case against the company brought by more than 40 states, dealt a stunning blow to regulators’ attempts to rein in Big Tech.