Former U.S. President Bill Clinton, currently on a visit to Brazil, has said the United States' security need does not justify spying on allied countries. In an interview published Monday by local daily O Globo, Clinton criticized the widespread espionage scheme Washington carried out in countries including Brazil, as revealed by former National Security Agency (NSA) contractor Edward Snowden. The United States has no justification for the espionage on Brazil's President Dilma Rousseff and the country's state- controlled oil giant Petrobras as well as on emails and telephone calls of millions of Brazilians, he said. "We should not be getting economic information under the pretext of security. Not with an ally," Clinton said. He said electronic surveillance can be used to track suspects of terrorism, and in the United States, the government is only allowed to carry out surveillance to find patterns.