President Donald Trump on Saturday threatened to impose 100% tariffs on all Canadian goods and products as the U.S.’s neighbors to the north strengthen ties with China.

The move comes after Prime Minister Mark Carney criticized Trump at the World Economic Forum on Tuesday and met with China’s President Xi Jinping in Beijing earlier in January to discuss closer economic and cybersecurity cooperation. The two leaders announced a new “strategic partnership,” promising to foster greater mutual investment between their countries.