Long-threatened tariffs from U.S. President Donald Trump have plunged the country into a trade war abroad — all while on-again, off-again new levies continue to escalate uncertainty

“Under the new Prime Minister, Canada remains committed to the fight against climate change,” says Wilkinson, referring to the newly elected prime minister Mark Carney. But “some elements of the climate plan probably have become a little tougher in the context of working with the Trump Administration.”

The tariff actions, which could upend nearly $2.2 trillion in two-way annual U.S. trade, went live hours after Trump declared that all three countries had failed to do enough to stem the flow of the deadly fentanyl opioid.