Canada, which was hit by a 50% tariff earlier this week, signaled it was prepared to respond noting “everything is on the table,” depending on the outcome of negotiations.

Donald Trump is threatening more tariffs on Canada, Brazil and Spain, even as his new round of global levies is about to take effect this week.

A new US tariff targeting Brazil took effect Wednesday, while Washington's other trading partners brace for a fresh volley of duties as President Donald Trump's temporary global…