First, thanks for the compliments.
Next, we live in a GLOBAL society. Isolationist policies will not work in a global society and that seems to be what you are advocating. Until you agree with this, there is no need to continue the conversation on how terrorism is a global threat, and what happens across the world will have an effect on our economy, jobs, etc. Sealing off our borders is a great concept, but you have to remember that what happens in xyz-stan also has an effect on us here in America.
As I have said many times: short-sighted thinking yields short-term results. I am not a supporter of Bush, but at least it looks like his administration has an understanding of this concept. Implimentation is another issue.