Trump has vowed punishing tariffs on Mexico, Canada and China, which are Texas’ biggest international trading partners.

The stakes are particularly high for Texas and other border states, where trade with Mexico is worth hundreds of billions of dollars a year.

Chrystia Freeland, the former finance minister who is running to replace Justin Trudeau as Canada's prime minister, says her country needs to release a “retaliation list” of goods the country would target if U.