On July 13, 2026, a bipartisan coalition of twelve state attorneys general filed a federal antitrust lawsuit in the U.S. District Court for the Northern District of California to block the proposed $110 billion merger between Paramount Skydance Corporation and Warner Bros. Discovery. Led by California Attorney General Rob Bonta, the coalition includes the states of Arizona, Colorado, Connecticut, Massachusetts, Minnesota, Nevada, New Jersey, New Mexico, New York, Oregon, and Washington.
The states allege that the merger violates Section 7 of the Clayton Act, arguing the transaction would substantially lessen competition and tend to create a monopoly in the entertainment industry. According to the plaintiffs, the combined corporate entity would control roughly one-third of the domestic market for wide-release theatrical films and basic cable television programming. The lawsuit alleges that eliminating Warner Bros. as an independent competitor would give the merged company unprecedented leverage over movie theaters and pay-TV distributors, potentially leading to increased cable subscription rates, more frequent channel blackouts, higher movie ticket prices, and reduced creative output.
The state-led lawsuit arrives just one month after the U.S. Department of Justice (DOJ) antitrust division formally cleared the transaction without requiring any asset divestitures or structural remedies. While the federal government determined the merger was unlikely to harm U.S. consumers, the state coalition characterized the DOJ’s approval as a failure of oversight, arguing the states must step in to protect free and fair markets.
In response, Paramount issued a statement characterizing the states’ lawsuit as a “fundamentally flawed application of the antitrust laws” that is “wrong on both the facts and the law”. The company pledged to vigorously defend the transaction in court, asserting that the merger is a pro-competitive strategy necessary to rival dominant technology companies in the streaming sector. Furthermore, Paramount warned that delaying the merger through litigation will actively harm entertainment industry workers whose livelihoods have already been disrupted by technological shifts.
The litigation introduces severe financial pressures for the merging entities. Under the terms of the merger agreement, if the transaction is not finalized by September 30, 2026, Paramount must pay a “ticking fee” that increases the share purchase price by $0.25 every 90 days. This provision equates to roughly $7.2 million in added costs per day, or approximately $650 million per quarter. If the states succeed in permanently blocking the deal due to a lack of regulatory approval, Paramount would face a $7 billion breakup fee owed to Warner Bros. Discovery. The states have requested a temporary restraining order to pause the deal’s closing while the judicial process unfolds.
Enforcement Shift: State Attorneys General Fill the Antitrust Void as Federal Scrutiny Wanes
The coalition lawsuit against the Paramount-Warner Bros. merger highlights a defining legal and regulatory trend in 2026: state attorneys general are aggressively expanding their independent antitrust enforcement efforts amidst a notable pullback from federal agencies.
This shift has been accelerating since early 2026. Following the resignation of Assistant Attorney General Gail Slater from the DOJ’s antitrust division in February, the federal agency has experienced a significant exodus of career antitrust lawyers and a sharp realignment of enforcement priorities. As the current administration embraces a more selective approach to federal antitrust enforcement, state attorneys general—both Democrats and Republicans—are utilizing their authority to fill the perceived enforcement gap.
The divergence between state and federal enforcers has become highly visible in recent litigation. For example, when the DOJ elected to settle its antitrust case against Live Nation and Ticketmaster, a coalition of 34 states refused to accept the federal consent decree. The states continued prosecuting the case independently and ultimately secured a landmark Manhattan jury verdict finding that the company maintained an illegal monopoly. State enforcers have also successfully secured a preliminary injunction halting the Nexstar-Tegna television station merger after it had already received federal clearance, and they are actively challenging the DOJ’s settlement regarding the Hewlett Packard Enterprise and Juniper Networks merger.
To sustain this elevated level of complex, national litigation, state attorneys general are fundamentally restructuring their internal capabilities. States are requesting budget increases specifically for antitrust enforcement, establishing dedicated antitrust divisions, and aggressively recruiting experienced alumni departing from the DOJ and the Federal Trade Commission (FTC). Furthermore, states are increasingly collaborating through the National Association of Attorneys General (NAAG) Multistate Task Force to pool resources and coordinate large-scale actions against major corporations, particularly in the technology, media, and healthcare sectors.
Legislative developments are also bolstering state-level authority. Several states, including Colorado and Washington, have recently enacted their own pre-merger notification statutes. These “mini-HSR” laws require merging companies to notify state authorities about pending transactions, granting state enforcers earlier visibility into deals and the ability to proactively launch investigations regardless of the federal government’s posture.
For the corporate sector, this trend signals a fragmented and less predictable regulatory landscape. Achieving federal clearance from the DOJ or FTC can no longer be viewed as a definitive safe harbor for corporate consolidation. Companies navigating major mergers must now anticipate multi-front legal scrutiny, preparing to defend their transactions against well-resourced state attorneys general who are increasingly willing to challenge deals the federal government has already approved.