A few notes on abstracting labour:

Control of borders grew rapdily when economic liberalism reached it peak just before the first world war. The first attempt at the globalisation of capitalism (liberalism) failed and eventually led to a world war and a Global recession in the advanced liberal capitalist states.

The second attempt at economic liberalism, or the globalisation of capitalism began in the late 1970's, this has been called new liberalism, or more acurately neo-liberalism because in this country it was incorrrectly termed Thatherism and in the US Raeganomics.

Control of borders gives comparative advantage to nations. This is an economic term that essentially means nations can keep the cost of labour low and hence undercut other nations on world markets. Comparative advantage also results in nations ceasing to make socially essentail products for its peoples too and means unncessari;y moving goods around the world. China is a classic example of this at the moment. Other nations are forced to have managed immigration to help them lower their labour costs and compete with these nations. Managed immigration needs tight managing of borders.

New Liberalism needs comparative advantage to retain profit margins. marx was right when he showed the economic value of a product mostly depends on the cost of labour needed to produce it - essentially profit depends on labour costs.

Capitalism in its penultimate form - liberalism - necessitates a tight control on movement of labour. When this breaks down facism becomes the only way to keep control of labour and its costs, because people can just ignore liberal laws unless they are enforced with the barrel of a gun and the threat of incarceration.

Liberalism sets up the framework for facism by creating ever more repressive laws that must if they are to be effective be enforced by violence or prison. This seems to be the what liberal states are now trying to do, They want to create labour or slave camps or slave zones, This is the only way that capitalism can continue to generate surpluss profit for the rich and powerful lazy bastards. Their power is backed up by their ability to buy the support of nation's armies and police forces to enforce the laws they create so that they can retain and increase their wealth ...





Essentially capitalism needs to manage borders because

You're confusing "absolute advantage" with "comparative advantage."

"In economics, the theory of comparative advantage explains why it can be beneficial for two countries to trade, even though one of them may be able to produce every kind of item more cheaply than the other."
 http://en.wikipedia.org/wiki/Comparative_advantage

Should you wish to expand your knowledge further, may I recommend as a good introductory book "Economics in One Lesson: The Shortest and Surest Way to Understand Basic Economics" by Henry Hazlitt