REFILE - ADDING RESTRICTIONS AND CORRECTING BYLINE Argentina's President Cristina Fernandez de Kirchner and Buenos Aires' province Governor Daniel Scioli visit an area affected by fire near Zarate, north of Buenos Aires, April 19, 2008. A thick cloud of smoke covered Buenos Aires for a fifth day on Saturday, the fallout from field burning by ranchers that has forced the closure of highways, flight delays and traffic congestion. REUTERS/Presidential handout (ARGENTINA). FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
REUTERS/HO