When Mexican president Vicente Fox leaves office this week and Felipe Calderon takes his place, President Bush will be the last of the so-called three amigos. Bush, Fox, and, of course, Canadian prime minister Paul Martin were the originators of the so-called Security and Prosperity Partnership, which critics call nothing more than a North American [U]nion. It means open borders, commerce of all [kinds] ... without the approval of either American voters or the U.S. Congress. An effort, the governments say, to harmonize regulation and increase cooperation between three very different countries. A new Canadian prime minister [is] joining the discussions as this North American partnership barrels ahead, with departments and ministries of all three governments working quickly to integrate North America by 2010. Now Mexico's new president, Felipe Calderon, [is] widely expected to keep the progress moving. Critics, though, say there's too little transparency and no congressional oversight. [Tom Fitton of Judicial Watch says] There's nothing wrong with neighboring governments talking to each other, synchronizing their watches to make sure they're all on the same page in the cases of emergency or on trade issues or even on the flows of goods and people. But if policies are being made that the American people might oppose, or that are contrary to the law ... they're doing something a bit more nefarious." [Fitton] points to SPP documents urging the free flow of goods and people across borders and a wish list from business interests that borders remain open during a flu pandemic. Worse, critics say foreign policy elites are promoting a European-style union, erasing borders between the three countries and eventually moving to a single North American currency called the [Amero].