US President Donald Trump announced immediate quickly 50% tariffs on particular Canadian goods.
The impacted categories include steel, aluminum and lumber.
The the Treasury office said the move aims to defend domestic producers and reduce Canada’s trade surplus.
The Canada’s government responded with plans to strike back.
The Canadian dollar fell 1.5% against the US dollar after the notice.
Trade experts cautioned that the tariffs could expanding trade conflict.
The two nations indicated a willingness to negotiate a agreement.