From "The Future of North America" by Robert Pastor:

"North America's leaders should deepen economic integration by negotiating a customs union. They should establish a North American investment fund to narrow the income gap between Mexico and its northern neighbors.... And they should create a lean, independent advisory commission to prepare North American plans for transportation, infrastructure, energy, the environment, and labor standards." (page 86 in the print version)

"in 2006, the three North American leaders invited a group of CEOs from some of the largest corporations in North America to establish the NACC (North American Competitiveness Council). They focused on 51 recommendations, which included eliminating pesky regulations, and agreed on the need to work 'under the radar screen' of public attention." (page 87)

Pastor also attacks critics of deep integration, such as Lou Dobbs and others. The rest of the article contains Pastor's ideas for integration, and it's disturbing. Near the end, he writes,

"To move toward these goals, the next president should designate a national adviser for North American affairs, who would chair a cabinet-level committee to formulate a comprehensive plan and to help the president negotiate the difficult tradeoffs between special interests and national and continental interests. Instead of refighting the NAFTA debate, this comprehensive approach would lay the foundation for a new North America." (page 98)