EPA Website: No U.S. Border,
in the November 15, 2001 issue vol 3 number 12, page 25.
Wasn't this also some part of a UN land use plan. I used to have a map of this UN plan for the US and this area was shaded. I think the plan had biodiversity corridors, animal preserves and areas for human activity.
I couldn't find it in Newsmax's archives, nor in the summer of 2004's Economist. Oh well. But the article in your original post which started it all is locatable -- and maddening enough! I wish more people would wake up to this before it's too late -- if it's not already.