I seem to be on a short series of posts about "transnational". The last blog post on Al Jazeera focused on transnational and last week's trip to Mexico brings up another example. I visited with government officials whose Mexican state borders on the U.S. Their citizens spend $6 million per day in the U.S. This represent about 1 percent of the total GDP of the U.S. state most frequently visited and about 10 percent of the GDP of the Mexican state. This trade flow is significant to both states regardless of the national border between the two states. Perhaps we should consider fostering this trade rather than focusing on limiting immigration.