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,

Robert Pastor, a leading intellectual force in the move to create an EU-style North American Community, told WND he believes a new 9/11 crisis could be the catalyst to merge the U.S., Mexico and Canada.

Pastor, a professor at American University, says that in such a case the Security and Prosperity Partnership of North America, or SPP – launched in 2005 by the heads of the three countries at a summit in Waco, Texas – could be developed into a continental union, complete with a new currency, the amero, that would replace the U.S. dollar just as the euro has replaced the national currencies of Europe.

In May 2005, Pastor was co-chairman the Council on Foreign Relations task force that produced a report entitled "Toward a North American Community," which he has claimed is the blueprint behind the SSP declared by President Bush, Mexico's then-President Vicente Fox, and Canada's then-Prime Minister Paul Martin.