I think they SPP Gang is nervous because of all the media attraction this has been getting.
I found this report by the Independent Task Force on Building a North American Community. In the Acknowledgement good old Senator John Cornyn is recognized.
http://canada.usembassy.gov/content/can_usa/northamericancommunity_TF_final.pdf#search=%22nafta%20office%20inter-american%20affAIRS%20john%20cornyn%22
On page 22 of 49 it tells why NAFTA was created for Mexico. LOL It even reports in this paragraph that the World Bank estimates that Mexico needs $20 billion a year for infrastructure and education.
Then on page 37 of 59 it suggests implementing the Social Security totalization agreement between Mexico and the U.S.
At the very top of page 38 of 59 this article suggest that none of this will work until the wages of the two North American countries are diminished to Mexicos wages.