Any Canadian response to U.S. tariffs will be regionally fair and equitable and not single out Alberta, Canada's main oil-producing province, Canada's Energy and Natural Resources Minister Jonathan Wilkinson said on Wednesday.

If the U.S. follows through on President Donald Trump's threat to impose massive tariffs on Canada as early as Saturday, Ottawa could hit back with retaliatory tariffs within hours or days, according to international trade lawyers.

Canada Liberal Leadership Candidate Chrystia Freeland says Canada should respond now to President Donald Trump's threat of tariffs. She says a list of possible tariffs Canada could impose on the US should be published.