Should Governments and Universities attract students irrespective of their nationality

Economist magazine has a new debate on "Should governments and universities attract students irrespective of their nationalities or residence". This debate could not have come at a more opportune time. With increased globalization, the world economy is very much on the doorsteps of a knowledge based economy. Human intellectual capital is in high demand. With this is prespective, it makes total sense for governments and universities across the world to attract the best and the brightest to work or study in their countries or universities respectively.
International students being the best and brightest in their field of study contribute to the intellectual capital of the country that they are being educated. They also contribute to increasing the diversity and culture of that particular country and the communities that they live in. Also the students have a profound impact on the economy of the countries they study in as they tend to work in that country for atleast a couple of years. Once they go back to their home countries, they will apply the knowledge and work experience gained to improve the standards of living in their home countries. In short they act as good ambassadors for the country of study.
Critics would argue that there are grave social, economic and security concerns in letting international students into a particular country. But the fact is when the benefits are weighed against the drawback, the benefits far outweigh the risks.

You can read more about the debate and post your points of view at Economist Debate