U.S. duties and tariffs will heavily affect lumber, steel, aluminum, and automobiles, he added, vowing action to protect Canadian jobs, buy Canadian goods, invest in industrial competitiveness and diversify export markets.

Sectoral tariffs still in play Those include a 50 per cent tariff on steel and aluminum, as well as 25 per cent on cars and auto parts, both of which had already been in effect. A new, 50 per cent tariff on some copper products, including copper pipes and wiring, also went into effect today.

What is CUSMA compliance? CUSMA was negotiated during the first Trump administration to replace the North American Free Trade Agreement. Companies can claim preferential treatment under CUSMA if they meet its rules of origin.