Jerome Corsi and others have obtained around 1000 pages of documents after a FOIA request to the Security and Prosperity Partnership of North America (spp.gov):

Government documents released by a Freedom of Information Act request reveal the Bush administration is running a "shadow government" with Mexico and Canada in which the U.S. is crafting a broad range of policy in conjunction with its neighbors to the north and south, asserts WND columnist and author Jerome R. Corsi...

..."The documents clearly reveal that SPP, working within the U.S. Department of Commerce, is far advanced in putting together a new regional infrastructure, creating a 'shadow' trilateral bureaucracy with Mexico and Canada that is aggressively rewriting a wide range of U.S. administrative law, all without congressional oversight or public disclosure," Corsi said...

You can download some of the documents here, and see also 'Shadow' agency to issue N. American border passes. More documents will be released later.

Bear in mind that all of this is unfolding without the involvement of the MSM or even the self-styled alternatives. I'm not aware of this story being investigated by any MSM sources or by any major bloggers that don't already oppose illegal immigration. (It has, however, been covered in diaries at DK and DU.) In fact, the Houston Chronicle appears to be involved in the scheme.

Will the MSM and those bloggers be able to ignore this subject now?