In Texas, advanced planning is underway for the construction of the Trans-Texas Corridor. When completed, it could serve as the first leg of the NAFTA superhighway (aptly named after the North American Free Trade Agreement).  In a move sure to anger transport unions, the "NAFTA Superhighway" would allow foreign transports and their lower paid drivers to deliver cargo straight into an inland port in Kansas City, before reaching customs and immigration control.

Plans for the Trans-Texas Corridor call for a 1200-foot wide swath that would include:
    - 6 lanes for passenger traffic
    - 4 lanes for truck traffic
    - 6 rail lines (high-speed, commuter and freight)
    - 200-foot wide utility zone (power, telecom, pipelines)

The highway is being ballyhooed by a pressure group, the North America Supercorridor Coalition, which includes business leaders, trade groups and government officials from Canada, Mexico and the United States.  Despite the fact that many in Washington deny the plans for a transnational corridor; many conservatives aren't buying it.  They link the highway to closed door negotiations that took place in Waco, Texas on March 2005 between US president George W Bush, and then leaders of Mexico and Canada, Vicente Fox and Paul Martin.

Republican Ron Paul, a Texas congressman, says it is part of a drive for "an integrated North American Union" - complete with a currency, a cross-national bureaucracy and borderless travel. "It would represent another step toward the abolition of national sovereignty," he said.

The idea of creating an EU-style union, complete with an unified currency known as the Amero, has been floated for a while. In Canada, discussions of a more limited cross-border currency union are common. The C.D. Howe Institute, one of Canada's leading economic think tanks, advocates the creation of a shared currency between Canada and the United States. The Fraser Institute, a leading conservative think tank, has also argued in favor of the Amero. Herbert G. Grubel, a senior fellow of the Fraser Institute, came out with a book entitled "The Case for the Amero" in September 1999. Conversely, the left-wing nationalist group Council of Canadians strongly warns that currency union would harm Canada's economy and sovereignty.

A major obstacle to the creation of a unified currency is the sheer dominance of the United States in any such union. Unlike any state in Europe, the USA has a larger economy than the rest of North America combined.  Some critics are of the belief that the United States does not intend to honor its outstanding debts.  The theory being that the collapse of the US dollar would act as a pretext for the adoption of the Amero and would force nations holding US treasury notes as debt to renegotiate based on the newly valued currency.

Hank Gilbert, a rancher, said: "At the Battle of the Alamo people came from all over the US to fight for our sovereignty. Now we are giving it away to the very people we fought." Like many protesters, he believes the link will make it easier for cheap goods to flood into the US. "Farmers fear that this kind of globalisation will put them out of business," he said.

-tdm