Canadian Pacific won a two-year fight for Kansas City Southern to link three countries

Kansas City Southern, the smallest Class I railroad in North America, became the target of a bidding war in 2021 when both Canadian National and Canadian Pacific moved to acquire it. Canadian Pacific ultimately won, agreeing to pay $31 billion for KCS to build a single-line network connecting the US, Mexico and Canada.

The deal cleared its last major hurdle on March 15, 2023, when the Surface Transportation Board approved the combination, citing expected efficiency gains and rejecting competition objections raised by the Department of Justice earlier that year. It was the first consolidation of two major North American railroads since the 1990s, leaving six Class I carriers where 39 existed before 1980s deregulation.

To win approval, CP and KCS accepted conditions: keeping connection points with other railroads open, a seven-year STB oversight period with data-reporting requirements, and an obligation to justify above-threshold rate increases on interline movements. The combined company began operating as Canadian Pacific Kansas City as early as April 14, 2023.

STB approval to combine into Canadian Pacific Kansas City, the first single-line railroad linking the US, Mexico and Canada, shifting ~64,000 truckloads a year onto rail.

CP's network stopped at the US-Mexico border; buying KCS was the only way to run freight on one line from Canada through the US into Mexico without a handoff.

Losing the bidding war to Canadian National would have left CP boxed into its Canada-US footprint while a rival captured the single-line advantage.

The STB found the deal an 'end-to-end' merger with no track overlap, so it could approve the efficiency gains without forcing route divestitures.

Winning a contested regulatory M&A fight can require trading away competitive terms up front: CP accepted a seven-year STB oversight period and forced interline access to close the deal.

The STB's decision cleared the way for Canadian Pacific Kansas City to begin operating as a combined system in April 2023, with CP and KCS due to detail the integration in the following days. The material covers the regulatory approval itself; it does not report on the network's later service performance or the truckload-shift target.