Canadian Pacific Railway (CP) has received the required regulatory clearance from the US Committee on Foreign Investment (CFIUS) for the proposed combination of CP and Kansas City Southern (KCS).
CP completed its acquisition of KCS on 14 December 2021.

Following the closing of the acquisition, KCS shares were placed into a voting trust.
KCS has since operated independently of CP while the US Surface Transportation Board (STB) completes its regulatory review of the joint railroad control application to create Canadian Pacific Kansas City (CPKC).
The STB review of CP’s proposed control of KCS is expected to be completed in early 2023.
CPKC will then be the only single-line railroad linking the United States, Mexico and Canada. However, it will still be the smallest of the remaining six Class 1 railroads.