Akhir 14, 1432, March 19, 2011, SPA -- U.S. President Barack Obama has landed in Brasilia, for the start of a three-country, five-day tour of Latin America to promote greater economic ties and improved regional security. Obama has singled out the economic benefits of the trip, noting the rapid growth of Brazil and Chile, another country on his itinerary. In his Saturday radio and internet address Obama noted that the United States exports more than three times as much to Latin America as to China, according to a report of the Associated Press. Obama will also visit El Salvador. His family is accompanying him.