During the highly partisan hearing, Republicans accused Ms. Khan, 34, who has carried out an aggressive agenda of lawsuits and investigations against tech companies, of “harassing” businesses. The lawmakers, who repeatedly cut off Ms. Khan midsentence, also ridiculed her for the F.T.C.’s recent losses in antitrust cases and for wasting government resources. “You are now 0 for 4 in merger trials,” Representative Kevin Kiley, Republican of California, said at the House Judiciary Committee hearing. “Why are you losing so much?”The blistering session capped a bruising week that has brought greater scrutiny to the F.T.C. after another judge decided in May against its attempt to block Meta’s acquisition of a virtual reality app maker, Within.

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Persons: Lina Khan, Ms, Khan, Khan midsentence, Kevin Kiley, Khan’s Organizations: Federal Trade Commission, Activision Locations: California