The Senate confirmed William Baer of Arnold & Porter as the new chief of the Antitrust Division of the U.S. Department of Justice on Sunday, to the delight of many in the antitrust bar who have widely lauded his qualifications for the job.

Baer is considered likely to continue the recent push on merger challenges and cartel enforcement actions seen in the last year and be “an aggressive but wise enforcer,” said Allan Van Fleet, a partner in the Houston office of McDermott Will & Emery.