摘要：The terrorist attacks against WTC in 2001 allowed the world to review its expectations regarding the post Cold War World of a society based on values such as market economy and liberal democracy. This paper aims to understand how domestic institutions were affected by this event. It assumes that although September 11th event does not constitute an element of disruption the established order in the domestic level, it allowed, for a brief period of time, to establish an unbalanced relation between Executive, Legislative and Judiciary Powers, in which Executive was preponderant. This balance was restored by the decisions taken by the U.S. Supreme Court, which are also object of analysis in this work.
