I don't recall advocating protectionism or shutting off immigration. I favor it, and I said so in my previous comment. I just think we need to actively manage it to avoid unpleasant side effects.

I want immigration policies which promote this: http://en.wikipedia.org/wiki/Anousheh_Ansari

I want the policies also to discourage this: http://www.laweekly.com/2006-07-27/news/they-wanted-all-blac...

Similarly (on a topic which avoids knee-jerk responses), I support increased bike usage, while I oppose bike use on sidewalks.