buenos air president barack obama first lady visit lake-side patagonian tourist city bariloche late month official trip argentina u.s. diplomat tell local radio friday trip follow couple visit cuba march 21 22 another major step toward end decades animosity former cold war foes meet newly elect argentine president mauricio macri march 23 fly bariloche follow day kevin sullivan deputy chief mission u.s. embassy buenos air tell radio mitre stopover ski-destination bariloche know crystal clear lakes panoramic mountain vistas appear first lady michelle obama idea sullivan say believe hear bariloche like ... seem would good place share little family time sullivan say relations improve argentina unite state since macri take office december macri move open latin america economy foreign investment ditch trade currency control enact predecessor seem us good moment president obama get know argentina dialogue president macri sullivan say agenda include international cooperation terrorism human right energy investment argentina world large untapped shale oil natural gas formations china major investor argentina energy grain sectors march 24 40th anniversary 1976 coup instal military dictatorship unite state initially support argentina return democracy 1983. adolfo perez esquivel nobel peace prize human right work dictatorship write open letter obama week say u.s. president stay buenos air 24th many argentines would see provocation march demonstrations honor victims military junta plan date argentine capital obama visit patagonian tourist city bariloche argentina trip