Canada will take legal action under the relevant international bodies to challenge the 25% tariffs imposed by the United States on most Canadian goods, a senior government official said on Sunday, calling the tariffs illegal and unjustified.

Prime Minister Justin Trudeau says Canada is ready to respond with 25 percent tariffs against C$155 billion worth of American goods.

President Trump ordered 25% tariffs on goods from Canada, Mexico and China beginning Tuesday, prompting international responses.