Regulatory – Antitrust and Competition
United States
Under the second Trump administration, U.S. antitrust enforcement is expected to return to a more traditional, economics-grounded approach, albeit with an increased emphasis on issues aligned with the administration’s political priorities. In contrast to the Biden-era focus on novel theories of harm, merger review in 2025 is likely to center on established principles of consumer harm and conventional economic analysis.
While leadership at the Department of Justice (DOJ) and the Federal Trade Commission (FTC) has expressed support for continuing to enforce the 2023 Merger Guidelines, the regulators are expected to apply those Guidelines with less expansive interpretations than seen in 2024. Enforcement agencies also are anticipated to be more receptive to structural remedies such as divestiture-based resolutions, and possibly even behavioral remedies, which may pave the way for an increased number of negotiated settlements. Additionally, the FTC may revisit and potentially rescind its prior approval policy, which currently requires merging parties to obtain advance clearance before pursuing future deals in related markets.
However, the regulatory landscape remains complex. In late 2024, the FTC introduced significant changes to the Hart-Scott-Rodino Antitrust Improvements Act premerger notification process, requiring the submission of additional ordinary-course documents, along with detailed disclosures on overlapping products, supply relationships, and the strategic rationale for transactions. These expanded requirements are expected to add complexity and lengthen the timeline for regulatory review, potentially slowing deal execution and increasing the burden on merging parties in 2025.
EU
Under the new leadership of Spanish Commissioner Teresa Ribera, the European Commission announced a focus on “resilience, efficiency, and innovation.” This policy shift includes heightened scrutiny of foreign subsidies, a push to accelerate the transition to renewable energy while maintaining affordable energy prices, and a sharper lens on so-called “killer acquisitions” by foreign buyers targeting EU assets.
Following the European Court of Justice’s ruling that curtailed the Commission’s ability to use Article 22 referrals to review transactions falling below EU or national merger control thresholds, the Commission is now exploring alternative approaches. EU Member States are increasingly encouraged to adopt measures such as transaction value thresholds and “call-in” powers for strategically significant transactions, even if they fall outside traditional criteria for notification.
The EU Foreign Subsidies Regulation has also emerged as broader in scope than originally anticipated, now capturing a growing number of transactions. Companies continue to face challenges in gathering foreign subsidy information globally, making early preparation essential for dealmakers in 2025, particularly if state-owned or controlled entities are part of a transaction.
While heightened regulatory scrutiny adds uncertainty, it also creates opportunities. Deals that align with national or regional policy goals – such as strengthening European industrial resilience, energy security, or technological leadership – may find a smoother regulatory path.
United Kingdom
The UK’s Competition and Markets Authority (CMA) has gained expanded power under the Digital Markets, Competition and Consumers Act 2024 (DMCC), which could significantly impact review of deals in the technology, digital markets, and AI sectors. Notably, the CMA can now scrutinize “killer acquisitions” even in the absence of overlapping activities between the target and acquirer. If one party – even just the acquirer – has at least a 33% share of supply and UK revenues of £350 million, this is a sufficient basis to establish CMA jurisdiction.
Although the UK’s merger control regime remains largely voluntary, companies designated as having Strategic Market Status (SMS) are now subject to mandatory reporting of certain transactions. This new requirement is enforced by the new Digital Markets Unit (DMU), a specialized body within the CMA.
These expanded enforcement tools arrive as the CMA reaches a possible inflection point. The newly elected Labour Government faces mounting political pressure to cut red tape and promote economic growth. The appointment of the former head of Amazon UK as CMA Chair in January 2025 has already sent a clear political message. In March 2025, the CMA launched a review of its merger remedies, potentially signaling an increased willingness to accept behavioral remedies as an alternative to mandatory divestitures.