OTTAWA, Ontario (AP) — The Latest on President Barack Obama's summit Wednesday with Canadian Prime Minister Justin Trudeau and Mexican President Enrique Pena Nieto (all times local): Trade, the environment and fallout from Britain's decision to leave the European Union are expected to top Wednesday's talks in the Canadian capital with Canadian Prime Minister Justin Trudeau and Mexican President Enrique Pena Nieto (PAYN'-yuh nee-EH'-toh).