'Unacceptable': Mexico Slams US Spying on President --- On Sunday, SPIEGEL reported that America's National Security Agency (NSA) had accessed the email system of Mexico's "Presidencia" domain, believed to be used by members of former President Felipe Calderon's cabinet. --- Mexican authorities responded quickly, saying the same day that they would be seeking answers from US officials "as soon as possible." - More, Spiegel