Canadian Prime Minister Justin Trudeau warned that “everything is on the table” regarding retaliatory measures to President-elect Donald Trump’s threatened tariffs.

Canada’s effort to push back against possible US tariffs is being undermined by Alberta Premier Danielle Smith’s pledge to fight federal plans to cut or tax crude exports to the US, Canada’s natural resources minister said.

Canada is preparing a list of potential US retaliatory tariffs and some of those could be on critical minerals, Energy and Natural Resources Minister Jonathan Wilkinson said on Thursday. Wilkinson said that Canada was looking at points of leverage that will create maximum pressure on the United States to come to table to find a resolution to the tariff issue.