A fence will fix it?

This article discusses the Homeland Security Secretary's, Michael Chertoff, statements about building a 670 mile long fence between Mexico and the United States. He uses the degradation of the environment as one of the important reasons for the construction of the fence. While this excuse may appease some, Oppenheimer points out that Americans are the ones who do the majority of destroying the environment. In the end, I agree with Oppenheimer in that instead of the US building fences, Mexico should build bridges and participate in the Latin American economy more, which will in turn help the entire region. The article can be found here.