Brazilian President Dilma Rousseff has cancelled an upcoming trip to the U.S. over revelations of spying by the National Security Agency. Rousseff was due to visit Washington next month and attend a state dinner in her honor at the White House. But on Tuesday, Brazil announced Rousseff has postponed her trip in response to leaks from Edward Snowden showing the United States spied on her personal communications as well as on Brazil’s state-run oil company, Petrobras. In a statement, the Brazilian government said the NSA’s “illegal practices … are incompatible with the democratic coexistence between friendly countries.” Brazil said Rousseff is open to visiting the United States after a “timely investigation” into the spying is complete. In a statement, the White House said it “understands and regrets” Brazil’s decision.