# Antitrust Division The [[Department of Justice]] component that brings federal antitrust cases, led by an Assistant Attorney General. It shares civil enforcement with the [[FTC]] under an informal clearance arrangement — but unlike the Commission it can bring **criminal** cases, which is why cartel prosecution lives here. Its history is the clearest available record of how much personnel determines law. [[Thurman Arnold]] (1938–1943) brought close to half of all Sherman Act cases filed in the statute's first fifty years, quadrupling the budget and taking staff from 111 to 496. [[William Baxter]] (1981–1983) announced he would bring only "economically rational" cases and on a single day — January 8, 1982 — dismissed the thirteen-year IBM case and settled the [[AT&T Breakup]]. [[Jonathan Kanter]] (2021–2024) filed [[United States v. Apple]] and the Live Nation and RealPage cases and co-authored the 2023 [[Merger Guidelines]]. ## What it is Created in 1933 when Franklin Roosevelt's Justice Department reorganized around subject-matter divisions, the Antitrust Division enforces the [[Sherman Antitrust Act]], the [[Clayton Antitrust Act]] and the [[Hart-Scott-Rodino Act]] pre-merger review. It has several hundred lawyers and a dedicated economics section across Washington and field offices in Chicago, New York and San Francisco. Its two levers are the civil case — a suit to block a merger or break up a monopoly, ending in a consent decree that a judge must find in the public interest under the 1974 Tunney Act — and the criminal case, mostly price-fixing and bid-rigging, where the Division has a leniency program that gives the first cartel member to confess immunity. The [[FTC]] handles the other half of merger review and has no criminal authority; the split between them is by industry habit, not statute. ## Personnel as law Because the statutes are broad, the Division's output has always tracked whoever runs it. The three reference points in the vault's telling are [[Thurman Arnold]], who turned a small office into the New Deal's most aggressive enforcer; [[William Baxter]], whose Chicago-school "economically rational" test and January 8, 1982 double act — dropping IBM, settling [[AT&T Breakup]] — set the terms for forty years; and [[Jonathan Kanter]], who with [[Lina Khan]] wrote the 2023 [[Merger Guidelines]] and filed [[United States v. Apple]], the [[Live Nation Antitrust Case]] and the RealPage algorithmic-pricing suit. Kanter's Division also won [[United States v. Google]] on liability in August 2024, the first monopolization win against a tech platform since Microsoft. ## 2025–2026: the lobbyist channel [[Gail Slater]] was confirmed **78–19 on March 11, 2025** on an "America First Antitrust" platform — populist on Big Tech, skeptical of consolidation, and continuing the Google and Live Nation cases. She lasted eleven months. In July 2025 her top deputy Roger Alford was fired after resisting the terms of a settlement in the $14 billion Hewlett Packard Enterprise–Juniper merger; he became a public whistleblower, describing a "lobbyist takeover" of enforcement in which figures with presidential ties — Mike Davis, Arthur Schwartz, [[Brian Ballard]] of [[Ballard Partners]], [[Kellyanne Conway]] — were retained by merging parties and got results through the Attorney General's office rather than the Division. Slater resigned on **February 12, 2026**, immediately after reporting that the same channel was pressing to settle the Ticketmaster case; the account in the trade press was that she was given the choice to resign or be fired. Omeed Assefi became acting head. Three weeks later the Division settled Live Nation mid-trial without the Ticketmaster divestiture it had sued for. The HPE/Juniper decree then became the test of whether any of this could be reviewed. Twelve state attorneys general and D.C., led by [[Rob Bonta]], intervened in the Tunney Act proceeding. On **August 14, 2026** Judge Casey Pitts of the Northern District of California approved the settlement anyway, while finding that HPE had failed to disclose its lobbying contacts as the Act requires, that "DOJ leadership overrode the opinions of the Antitrust Division staff," and that the Division had accepted a limited settlement "under duress after the Trump Administration threatened to dismiss the lawsuit." The Tunney Act, he held, does not let a court reject a decree on process grounds alone — which is the finding that matters: the statute written after Watergate to stop exactly this kind of settlement turns out to have no remedy for it. The states may still sue on their own. The through-line for the vault: the Division kept the neo-Brandeisian toolkit — the 2023 Guidelines are still in force, the big cases were not dropped — and changed who decides how it is used. See [[New Brandeis Movement]] and [[US Antitrust and Monopoly Timeline]]. ## See Also - [[Department of Justice]] · [[FTC]] · [[Antitrust]] · [[Merger Guidelines]] · [[Hart-Scott-Rodino Act]] - [[Thurman Arnold]] · [[William Baxter]] · [[Jonathan Kanter]] · [[Gail Slater]] - [[United States v. Google]] · [[United States v. Apple]] · [[Live Nation Antitrust Case]] · [[AT&T Breakup]] · [[United States v. Alcoa]] · [[United States v. Paramount Pictures]] - [[Brian Ballard]] · [[Ballard Partners]] · [[Kellyanne Conway]] · [[Pam Bondi]] · [[Todd Blanche]] - [[New Brandeis Movement]] · [[US Antitrust and Monopoly Timeline]]