Tim Wu, a central architect of President Biden’s push to clip the wings of the nation’s largest firms, is leaving the White Home.

Mr. Wu’s final day on the Nationwide Financial Council will probably be Wednesday, ending his 22-month tenure as particular assistant to the president for competitors and tech coverage, the White Home mentioned. Mr. Wu instructed The New York Occasions that he would return to his earlier job, as a professor at Columbia Regulation College.

Mr. Wu is one-third of a troika — together with Lina Khan on the Federal Commerce Fee and Jonathan Kanter on the Justice Division — main Washington’s makes an attempt to extra aggressively verify company giants, together with the biggest tech firms. He was an writer of a July 2021 government order demanding that federal companies take steps to extend competitors throughout the financial system. Ms. Khan and Mr. Kanter have tried to dam company consolidation utilizing unusual arguments in courtroom.

Mr. Wu, 50, mentioned private causes had been driving his departure. He has been commuting to Washington from New York, he mentioned, requiring him to spend stretches away from his younger kids.

“There’s a time the place the burden on household is an excessive amount of,” Mr. Wu mentioned. “I’ve been feeling the steadiness has shifted.”

Mr. Wu mentioned he had entered the job believing it to be a “once-in-a-generation probability” to reverse many years of extra conservative considering in antitrust regulation. The administration has notched some wins on that entrance — corresponding to enacting elements of the 2021 government order, which led to efforts by the federal government to open up charging networks for electrical automobiles and make listening to aids obtainable for buy over-the-counter.

“I feel I’m perhaps most pleased with the truth that we’ve got re-established a presidential function in competitors coverage and financial construction,” he mentioned.

However antitrust laws to ban widespread practices utilized by tech giants, a aim of many progressives, didn’t turn out to be regulation.

Mr. Wu mentioned it was “disappointing” that tech-related laws had not handed throughout his tenure and defended the White Home’s efforts to push for the antitrust measure. “We supported it alongside the best way,” he mentioned, including, “We repeatedly and unconditionally voiced help for a bipartisan invoice of that nature.”

Mr. Wu mentioned he was pleased with the aggressive motion pushed by the F.T.C. and the Justice Division, the 2 major federal antitrust regulators, over the previous two years. The companies, that are led by political appointees, work independently of the White Home.

Though the Justice Division efficiently blocked Penguin Random Home from shopping for Simon & Schuster, courts dominated towards a number of different of its merger challenges. The F.T.C. has additionally sued to dam Meta, Fb’s guardian firm, and Microsoft from shopping for firms in latest months; these efforts face stiff authorized challenges.

Hannah Backyard-Monheit, who was concerned within the antitrust government order, will take over his antitrust coverage work. Elizabeth Kelly, who works on digital asset coverage for the Nationwide Financial Council, will inherit his portfolio of expertise coverage points, the White Home mentioned. Bharat Ramamurti, the deputy director of the Nationwide Financial Council, will proceed to supervise each areas.

Brian Deese, the director of the Nationwide Financial Council, mentioned in an announcement that previously two years the federal government had reignited “an important American custom of presidential management on competitors coverage, harkening to the period of Franklin and Teddy Roosevelt.” He added that the administration would “proceed to institutionalize bipartisan, pro-competition reforms throughout companies.”

Requested what to anticipate from the approaching years, Mr. Ramamurti pointed to calls for specified by the 2021 government order.

“We’ve bought all of those totally different levers that we are able to pull — personnel, the judiciary, you understand, the companies — and we’re engaged on all of that,” he mentioned.