The leaders of Mexico and Canada responded quickly, and in different ways. Justin Trudeau, Canada’s prime minister, jumped on the phone to Mr Trump to chat about the “intense and effective connections” between their countries. His deputy, Chrystia Freeland, released a statement about the importance of border security.

Even as Mexico President Claudia Sheinbaum attempts to quell concerns over Donald Trump’s threat of 25% tariffs, economists are looking glumly at the trouble ahead should the US president-elect actually follow through.

US President-elect Donald Trump's plan to impose high import tariffs on Mexican goods has sparked a discussion with Mexican President Claudia Sheinbaum on migration policy at their shared border. Sheinbaum on Wednesday described the conversation as "excellent" on social media platform X,