The postponement of President Dilma Rousseff's US state visit is a blow. But her domestic political standing may be as much a factor as anger over NSA spying.
Angered over allegations of US spying in Brazil, President Rousseff canceled her state visit this week. Her government also launched a 'big brother' style domestic surveillance program.
Newly published documents released by Edward Snowden indicate the US spied on the presidents of both countries.