Major Shipper Groups Ask STB to Block Union Pacific–Norfolk Southern Merger, Citing Unproven Public Benefits

Shipper Coalition Demands STB Deny UP–NS Merger, Calling Evidence Insufficient

Five influential U.S. shipper organizations—the Alliance for Chemical Distribution, American Chemistry Council, The Fertilizer Institute, and the National Industrial Transportation Group—have jointly filed with the Surface Transportation Board (STB) to reject the proposed Union Pacific–Norfolk Southern merger. In a motion submitted earlier this week, the groups argue that the railroads have not provided enough information for the Board to conclude the deal serves the statutory public interest. The filing emphasizes that under STB rules, the initial screen—the prima facie standard—must be met by sufficient evidence, which they say UP and NS have failed to supply.

The opposition comes as the merger application remains in regulatory limbo. On May 28, the STB accepted the revised application for consideration but suspended the process and ordered the railroads to submit supplemental information by July 27. In response, UP and NS filed expanded commitments, including a plan to double Committed Gateway Pricing shipments, preserve competitive rail options for shippers that would otherwise be reduced from two to one or three to two carriers, and provide new service performance protections with rate relief for customers if public benefits don’t materialize. The railroads’ CEOs cast the deal as America’s first transcontinental railroad that will deliver faster, more reliable coast-to-coast service and shift freight from highway to rail.

However, Nancy O’Liddy, Executive Director of the National Industrial Transportation League, countered that despite repeated requests for data, UP and NS have not transparently demonstrated how the combined entity will enhance rail-to-rail competition or how touted benefits outweigh the harms. “All freight rail shippers, especially captive shippers, must benefit from guaranteed, long-term improved competitive service—not just empty promises,” she said. The coalition insists the competitive damage from a merger that eliminates a Class I competitor cannot be effectively remedied by the STB’s conditioning authority.

The STB’s review process remains ongoing, with an environmental review and further hearings ahead. The merger’s fate now hinges on whether the Board—applying its stricter 2001 merger rules—finds the railroads have cleared a much higher public-interest bar than in the past.

Why the Opposition Highlights a Fundamental Shift in U.S. Rail Merger Policy

The 2001 Merger Rules That Heightened the Bar

The shipper filing explicitly invokes the STB’s 2001 rule revisions, which fundamentally shifted rail merger policy by requiring applicants to prove, rather than simply assert, that a transaction enhances competition and serves the public interest. Those rules introduced a heavier burden of proof, a skeptical “show me” attitude toward benefit claims, exclusion of benefits achievable by other means, and a requirement to assess downstream and cumulative effects. The rules were specifically designed to address transcontinental mergers—exactly the kind UP and NS propose—making it clear that such deals could have “transformative, serious, and irremediable consequences” for the entire North American rail network. By leaning on this regulatory framework, shippers are forcing the STB to apply its strictest scrutiny, knowing that the Board itself has said such mergers are extremely hard to justify.

Are the Railroads’ Expanded Commitments Enough?

UP and NS’s July 27 commitments—including broadened Committed Gateway Pricing, preservation of 3-to-2 and 2-to-1 shipper access, temporary alternative service rights during integration, and a new rate relief process—are unprecedented in scope. Yet the shippers’ opposition suggests these may still fall short of the required competitive showing. The key point of contention is whether contractual promises can truly substitute for structural competition. With a fusion of two of the largest remaining Class I railroads, many shippers would lose a genuine alternative carrier. The coalition argues that even the most generous gateway pricing cannot replicate the negotiating leverage and service reliability that multiple independent railroads provide. The STB must decide if these commitments meet the new standard’s demand that benefits be concrete, verifiable, and not obtainable by alternative means.

Political Timing and the Odds of Approval

Paul Tonsager of IMS Advisory recently noted that the approval odds have narrowed from 60–40 to roughly 50–50, partly because delays invite negative press and additional scrutiny. The review coincides with upcoming midterm elections, which could alter the political environment around rail regulation. A change in administration or Congressional oversight could shift the STB’s appetite for such a transformative transaction, especially with organized shipper opposition gaining momentum. For UP and NS, speed is not an ally; every month of delay gives opponents more time to build a case that the merger irreparably harms competition.

Strategic Implications for Shippers, Competitors and the Rail Industry

• Shippers must prepare for two scenarios. If the merger is approved, immediately map your freight flows against the new Committed Gateway Pricing program—only shipments qualifying under the expanded terms will get the promised cost and access benefits. For captive lanes, determine if the 2-to-1 or 3-to-2 commitments actually preserve real, enforceable routing alternatives in your contracts.
• Engage early in the STB process. The Board’s environmental review and public hearings will provide formal avenues for shippers to file comments. Submitting detailed, lane-specific evidence of competitive harm is far more effective than general statements, given the 2001 rules’ demand for concretely demonstrable public interest harm.
• Investors in UP, NS, and rail sector equities should track the STB’s proceeding timeline and midterm election outcomes. A change in the political composition of the Senate or House could indirectly influence STB membership and regulatory philosophy, swinging the 50–50 probability. Watch for any further information requests from the Board; additional demands for data would signal deeper skepticism and raise deal risk.
• Competing railroads and trucking companies should evaluate strategic opportunities. If the merger is blocked, the status quo preserves current competitive dynamics. If it proceeds, the transcontinental network will pressure other Class I railroads to seek their own deeper alliances or face disadvantage—particularly on intermodal coast‑to‑coast lanes where the merged entity would offer a single-line service advantage.