Richard Fernandez has a thoughtful entry titled “Sanctuary”
http://pjmedia.com/richardfernandez/2012/07/14/sanctuary/#more-23345
Reminding us of unintended long-term consequences. It includes the battle of White Horse Hill during the “police action” in Korea (also known as the “Forgotten War”), and the forgotten Presidential Proclamation 2914.
It is an interesting read and as he points out, the repercussions of 9/11 are still in process.