• President Trump has terminated Surface Transportation Board member Robert Primus, citing a misalignment with the 'America First' agenda.
  • The dismissal, the first of an STB member in the agency's 138-year history, creates a 2-1 Republican majority just as the board prepares to review an $85 billion railroad merger.
  • Primus has vowed to challenge the firing, calling it 'legally invalid,' setting up a potential precedent-setting legal battle over presidential authority.

President Donald Trump has fired Robert Primus, a Democratic member of the federal Surface Transportation Board (STB), in a move that immediately reshapes the regulatory landscape for a pending $85 billion railroad merger between Union Pacific and Norfolk Southern. Primus, a former chairman of the board, was notified of his immediate termination via email on August 27, 2025, according to people familiar with the matter.

A White House spokesman confirmed the dismissal, stating that Primus's views did not align with the administration's "America First" agenda. The decision comes at a critical juncture, with the STB poised to consider one of the largest mergers in railroad history, a deal that would significantly impact industry competition and freight rates across the nation.

Primus has pledged to fight the termination, calling it “deeply troubling and legally invalid” in a statement. He cited the statute governing the independent agency, which states that board members can only be removed for “inefficiency, neglect of duty, or malfeasance”—none of which have been alleged by the White House. His challenge could test the limits of presidential authority over independent regulatory agencies.

The firing tilts the board's composition to a 2-1 Republican majority, with Patrick Fuchs named as the new chair. This new alignment is widely perceived by industry analysts as a shift toward a more deregulatory stance, likely favoring railroad profitability. Primus had been known for his skepticism toward previous megamergers, often arguing they were not in the public interest.

The abrupt change in the board's makeup sends a clear signal to the market just as a landmark decision on industry consolidation is pending. The STB’s regulatory stance directly influences railroad stock valuations, with its determinations on cost of capital for the industry fluctuating between 7.89% and 10.68% in recent years. Efforts to reach the White House for further comment on the legal basis for the firing were not immediately successful.