We are just supposed to accept the deaths of 5000 citizens at the hands of foreigners who hid among us? We are not supposed to do anything about the free movement of immigrants, especially those from hostile nations/cultures, across our borders and within our country, even after they massacred our people on 9/11 and are almost certainly responsible for the biological warfare since? You're either a naive simpleton or just plain sinister.
The hard truth is -- our government HAS NO CLUE WHO DID THIS. It might be Dr No of Kaos in an oceanic volcano for all they know.