President Donald Trump said Friday he might impose reciprocal tariffs on some Canadian goods as soon as today, the latest development in his trade war with U.S. neighboring countries after a head-spinning week in which he imposed a 25% tax on Mexican and Canadian goods—then delayed most of the levies for a month.

Canadian government officials say Canada’s initial retaliatory tariffs against the U.S. will remain in place for now despite President Donald Trump postponing 25% tariffs on many imports from Canada for a month.