President Obama leaves for Canada on Thursday ; to meet with Canadian PM Harper . Comment: Trade will be a major issue when President Obama visits Canada beginning Thursday . Bill now says that provision will not trump existing trade agreements like NAFTA . Still , Canadian officials worry about what they see as new U.S. protectionist tilt .
President Obama leaves for Canada on Thursday ; to meet with Canadian PM Harper . Comment: Bill now says that provision will not trump existing trade agreements like NAFTA . Still , Canadian officials worry about what they see as new U.S. protectionist tilt .