The US 50% additional tariff on roughly $20 billion of Canadian goods remains in force on August 25, the fourth calendar day after the August 22 effective time.
Canada remains the dominant US import source for recovered sulfur. Alberta forming plants and the Vancouver stem are watching whether later list changes or Ottawa retaliation pull HS 2503 into the fight.
Open reporting from AP, NBC, and USTR notes the duties cover a narrow slice of Canadian exports while exempting energy, potash, fish, and critical minerals. Canadian Prime Minister Carney said Ottawa will retaliate with targeted tariffs effective September 8, concentrated in steel, dairy, appliances, agricultural equipment, pulp and paper, and electronics.
Elemental sulfur (HS 2503) is not named in the covered lists; Canada remains the dominant US import source for recovered sulfur.