One after another, President Kennedy has sent his New Frontiersmen winging south to test the temper of Latin American opinion, particularly in Brazil, where new President Jánio Quadros' enigmatic ways and hands-off-Castro attitude create problems for the U.S. Last March, Latin America Task Force Chief Adolf A. Berle met an icy reserve that bordered on hostility. Two months ago, Treasury Secretary C. Douglas Dillon, in Brazil to present Quadros with aid of nearly $1 billion, got a somewhat bigger hello, but was still hustled in and out of Brasilia's Planalto Palace via the underground garage.
Last week U.N. Ambassador Adlai...