Posted: May 26, 2021 8:29 PM AT | Last Updated: May 26 Canadian National and Kansas City Southern have filed a motion with U.S. regulators seeking approval for the purchase.(Travis Golby/CBC) Canadian National said Wednesday it is confident it will win U.S. regulatory approval for its $33-billion purchase of the Kansas City Southern railway, a deal that has implications for two Maritime provinces with rival gateway ports. If approved, CN will own a single, north-south rail network connecting Canada, the United States and Mexico — positioning itself as a carrier for free trade in everything from lumber to cars between the three countries.