"As the U.S. struggles with a sagging public image in many Latin American countries, American adults show a stunning ignorance about the region, a new Zogby Interactive poll shows. Only 10% of online poll respondents said they were familiar with Luiz Inacio Lula da Silva, the second-term president of Brazil, South America’s largest country. And just 20% were familiar with Felipe Calderon, the President of Mexico, who was elected last summer in an extremely close race that captured global headlines."