Spain has survived for the past year without the existence of a Department of Homeland Security. They have survived without the existence of a Patriot Act. Their government has not become mired in lawsuits or compensation issues related to the attack. Prime Minister Aznar, within days of the attack, announced hundreds of millions in aid to victims and their families, granted Spanish nationality to affected foreigners, and promised legal residency to illegal immigrants affected by the attacks.
Despite their lack of color codes and Patriot Acts, and despite the fact that Spain lives with an extremely large Muslim population, in a far less geographically isolated country than the United States - despite all this, they have not suffered another terror attack of the magnitude of March 11, 2004.
I bring up March 11th, 2004 largely in memory of those who died, and because the major media of the United States will tuck this away somewhere in the middle of their "world" section of the news, if they cover it at all. Take a look at CNN or elsewhere today and let me know if I'm wrong.