NEW : Brazil 's foreign minister decries an `` unacceptable violation '' of the country 's sovereignty . U.S. summons the U.S. ambassador to demand an investigation . Journalist Edward Snowden tells Brazil 's Cabinet TV about NSA documents . In Brazil , bilateral relations were already strained by reports that the South American nation was one of the countries that had been most-targeted by the NSA spying program . He says two document is on Mexico 's soon-to-be president discussing his NSA picks .
NEW : Brazil 's foreign minister decries an `` unacceptable violation '' of the country 's sovereignty . U.S. summons the U.S. ambassador to demand an investigation . Journalist Edward Snowden tells Brazil 's Cabinet TV about NSA documents . He says two document is on Mexico 's soon-to-be president discussing his NSA picks .