Thanks for reading it through; I'll be doing that myself here shortly (didn't have a chance this a.m.); what I did think was helpful (which you also mentioned) was that it referred to specific other documents (dated back to 2001).
I agree that the background is informative. I do think that the CSIS document I posted in #945 is one of the more comprehensive and informative items I've found (and less biased). I pulled it from the Canadian Embassy site (about 25 page doc)
http://canada.usembassy.gov/content/can_usa/economicintegration_csis_0703.pdf