Alberta’s current, former premiers offer contradicting views on U.S. counter-tariffs  CTV NewsAlberta, Saskatchewan push back on calls for oil, potash export levies in retaliation for U.S. tariffs  The Globe and MailDiane Francis: Why we should tax energy exports to the U.S.  Financial PostAlberta, Sask. politicians head to the U.S. for conference, trade advocacy  CTV NewsAlberta premier doubles down on diplomacy with Americans to stave off U.S. tariffs  CBC