You called the U.S. a "xenophobic racist society." This isn't a racist society. It is a society, like yours, that has bigots. We'll never be rid of them. But as the civil rights movement showed, the law can influence behavior. The law cannot change people's prejudices, but it can force them to not to discriminate based on race, color, creed, national origin, sex, disability, and religion. Bigots in our society: yes. A racist society: no.
A xenophobic society? I had to look that one up. Xenophobia: an unreasonable fear or hatred of foreigners or strangers or of that which is foreign or strange. So the country that leads the world in immigration is xenophobic? That's ridiculous. Gotta wonder why Canadians and people from the Caribbean flock to the U.S. every year. According to one source, over 700,000 Canadians came to the U.S. in 2004, with 920,000 projected in 2010. We had over 34 million immigrants in 2004 with over 40 million projected by 2010. I wonder why they want to live in such a xenophobic and racist society?
I can speak for the Caribbean people. When you are from a very poor nation, Haiti being an example, and you cannot feed your kids - you will emigrate to any place better you can. That simple.
Also, believe it or not the US is one of the easiest nations for them to emigrate to. Whether legal or illegal, it is quite easy in comparison to other places.
As most people probably know the Caribbean is a place of vast contrast - you have nations that are very poor, and nations that are extremely wealthy. Very few in between. One island here has the highest incomes in the world, and also has no income tax.
The rich nations in the Caribbean do not allow permanent immigration. None. When a country is 50sq miles, they cannot handle it. The only way to move to a rich island nation is to marry a citizen, or temporarily on a work permit, which has a host of restrictions the main one being the length, 3 yrs, 6yrs max etc. They have no 'green card' type programs. Even marriage is not foolproof, you don't get status for 10 yrs in most cases. Sounds horrible, and in many cases it is, but illegal immigration is dealt with harshly...straight to prison...when you get out...straight back to where you came from. My island has *never* offered political asylum to anyone.
Therefore, with all the rich surrounding nations out as immigration possiblities, Europe out due to the expense of getting there, the US is the optimum place for them.