But then I came to the conclusion that no, while there may be an immigration problem, it isn't really a serious problem. The really serious problem is assimilation.

The question really is what will be the central focus of global politics in the coming decades and my argument is that cultural identities and cultural antagonisms and affiliations will play not the only role but a major role.

Global politics remains extremely complex and countries have different interests, which will also lead them to make what might seem as rather bizarre friends and allies.

I've been to Egypt, Lebanon, Saudi Arabia, and Kuwait for brief visits at conferences, and they are very interesting countries.

Thus, biologically speaking the American people are literally only half an immigrant people.

In the emerging world of ethnic conflict and civilizational clash, Western belief in the universality of Western culture suffers three problems: it is false; it is immoral; and it is dangerous.

There has been an Irish lobby that has impacted U.S. foreign policy for a century and a half, and at times made our relations with Great Britain very difficult. Other comparable lobbies exist.