So, I guess the answer to your question about whether there's a fence (actually) being built is "No".
There is no fence actually being built right now.
How do you feel about all the things Bush has done to encourage and reward illegal aliens for the last seven years?
http://www.freerepublic.com/focus/news/2028416/posts?page=42#6
And acquiring the land is the initial process of building the fence. Along with a virtual fence that they have been testing, along with obtaining contractors. This fence is being built. Just not to your liking. Tuff.