CN Commends STB Decision to Pause UP–NS Merger Review Pending Additional Information
CN has welcomed the Surface Transportation Board’s (STB) decision to pause its review of the proposed merger between Union Pacific (UP) and Norfolk Southern (NS), describing the move as a necessary step to ensure regulatory rigor and completeness in one of the most consequential rail consolidation proposals in recent years. The Board has directed the applicants to submit substantial additional information before the review process can proceed further, reinforcing concerns that the current filing does not yet satisfy the threshold required for a full public-interest evaluation.
According to CN, the STB’s decision confirms long-standing concerns raised by the company and multiple industry stakeholders: that Union Pacific and Norfolk Southern have not yet presented a sufficiently detailed or credible case to justify approval of their proposed combination. CN emphasized that under the STB’s revised merger framework, the burden of proof lies entirely with the applicants to demonstrate, at a minimum, a “prima facie case”—meaning an initial showing that the transaction meets the public interest standard in a clear and substantiated manner.
The Board made clear that this requirement is not procedural formality but a foundational threshold. Until UP and NS meet this standard, CN argues, the review process cannot meaningfully advance. The company stressed that it is not the responsibility of regulators, shippers, labor organizations, or other stakeholders to compensate for gaps in the applicants’ submissions.
STB Flags Significant Gaps in Merger Filing
The STB’s latest order follows its earlier guidance outlining the scope and rigor expected in the amended application. Despite this roadmap, CN notes that Union Pacific and Norfolk Southern have continued to leave substantial gaps in their submission. These deficiencies, according to the Board, are “concerning in their frequency and magnitude,” particularly in areas central to evaluating the competitive and operational implications of the merger.
Key unresolved issues include insufficient analysis of competitive harms, incomplete market share assessments, and a lack of credible mechanisms to preserve or enhance competition in affected rail corridors. The Board also echoed concerns raised by CN that the filing lacks clarity and detail, limiting the ability of stakeholders to conduct a meaningful review of the proposal’s merits.
CN highlighted that such omissions are particularly significant given the scale of the proposed transaction. A merger of two major Class I railroads would represent a fundamental restructuring of the U.S. freight rail network, with the combined entity potentially controlling approximately 40% of national rail traffic. In CN’s view, such concentration demands an exceptionally high level of scrutiny and evidentiary support.
Concerns Over Competitive and Economic Impacts
The STB’s intervention reinforces broader concerns that the applicants have not yet provided sufficient information for regulators to fully assess the competitive risks associated with the merger. CN argues that the lack of detailed analysis undermines the ability of stakeholders to evaluate how the proposed combination would affect pricing, service quality, and market access for shippers across North America.
CN has consistently maintained that the merger could significantly reduce competitive rail options, increase market concentration in key freight corridors, and create downstream risks for supply chain resilience. The company contends that fewer independent rail carriers in major markets could weaken competitive pricing dynamics and reduce service flexibility for industrial customers, agricultural shippers, and intermodal operators.
The STB itself has underscored the importance of grounding its review in concrete evidence rather than assumptions. It warned that the “real-world consequences” of a merger of this magnitude “cannot be ignored, assumed away, or overlooked based on vague intentions or promises.” CN says this reinforces its view that regulatory approval must be based on rigorous, data-driven analysis rather than aspirational claims of efficiency or integration benefits.
Criticism of Applicants’ Revised Filing
CN also criticized the applicants’ approach to addressing earlier regulatory feedback. According to CN, rather than substantively resolving the deficiencies identified by the Board, UP and NS largely reiterated prior arguments and repeated analyses that regulators had already deemed insufficient.
CN argues that this approach falls short of the heightened standards established under the STB’s modern merger rules, which require applicants not only to demonstrate theoretical benefits but to provide clear evidence of tangible competitive enhancements and public-interest gains. In CN’s assessment, the current record continues to reflect unresolved analytical gaps, unsupported assumptions, and proposed remedies that do not adequately address the scale of potential competitive harm.
CN stated that the applicants must take the regulatory process more seriously and provide a comprehensive, transparent, and data-supported case. Without such improvements, the company believes the application cannot meet the legal threshold required for approval of a transaction of this magnitude.
Scrutiny of Proposed Mitigation Measures
A central point of contention highlighted by CN is the adequacy of the mitigation measures proposed by Union Pacific and Norfolk Southern. The applicants have promoted initiatives such as their Committed Gateway Pricing program as a means of preserving competitive balance in affected markets. However, CN argues that these remedies are limited in scope and do not meaningfully offset the broader competitive risks associated with the merger.
According to CN, the program applies to only a small portion of total rail traffic and may not provide meaningful relief to many shippers. In fact, based on the applicants’ own supporting materials, CN notes that some customers could face higher transportation costs under the proposed structure, undermining claims that the merger would deliver widespread efficiency or pricing benefits.
CN maintains that such narrow and conditional remedies are insufficient given the scale of market concentration that would result from combining two of the largest freight rail operators in North America. The company argues that effective mitigation would need to be broader, more durable, and enforceable over time to ensure meaningful protection for competition and customers.
STB Reinforces Need for Full Public-Interest Review
The STB’s latest decision underscores its commitment to ensuring that any potential rail consolidation is evaluated under a rigorous public-interest framework. CN welcomed the Board’s continued insistence on a complete evidentiary record before advancing the review process, describing it as essential to maintaining fairness, transparency, and accountability.
The Board’s requirement for additional information effectively pauses the merger timeline until UP and NS can demonstrate compliance with the “prima facie” standard. This step signals that regulators remain unconvinced that the current application provides sufficient clarity on key competitive and operational questions.
CN reiterated its confidence in the regulatory process and expressed support for the Board’s approach to enforcing the statutory requirements governing major rail mergers. The company emphasized that the integrity of the review depends on ensuring that all parties have access to complete and accurate information before any decision is made.
Looking ahead, CN stated that it will closely review the supplemental information to be submitted by Union Pacific and Norfolk Southern in response to the STB’s directive. The company expects that this additional filing will need to address the significant gaps identified by regulators and stakeholders, including detailed competitive analysis, clearer market impact assessments, and more robust mitigation proposals.
CN reaffirmed its position that the proposed merger, as currently presented, raises substantial concerns regarding competition, market concentration, and supply chain stability. The company emphasized that any approval must be based on a fully developed record demonstrating clear public benefits that outweigh potential harms.
As the regulatory process continues, CN reiterated its expectation that the STB will hold the applicants to the full requirements of the law and ensure that any final decision reflects a comprehensive evaluation of the merger’s implications for the U.S. freight rail system and the broader economy.
Source lnk: https://www.cn.ca/