During his time in office, Trump has imposed whopping tariffs on Canadian steel and aluminum and repeatedly called for the country to become the 51st state.

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U.S. President Donald Trump has unleashed tariffs against Canada today, setting in motion a trade war between two countries ...

Watch LIVE in-depth coverage from CTV News Channel as Mark Carney sworn in as Canada's next prime minister @ 10 a.m. EDT.

Watch LIVE in-depth coverage from CTV News Channel as the trade war between Canada and the U.S. intensifies.