The States has more upward mobility potential for blacks despite their race issues. I'm not sure about the UK, but if you look at a place like Canada, I think it's worst in these parts than in the US. For example, all of my US Black family are middle/upper-middle class. Even the one that went to prison is now a successful Realtor and is making their own developments. While most of the family in Canada are on welfare or are between jobs and Employment Insurance and overall struggling. Just get a much better vibe in the US and I think its because despite the racism and discrimination, they have good pockets of successful black businesses or workplaces, or a really amitious driven black person can really thrive there. Canada only has a 4% overall black population. The US has a much larger black population with more weath changing hands.
My own black cousins say they would rather be in the US than Canada as they feel they would be on the ground if they are here. I have a black cousin in Canada who studied law in the UK, had two different degrees, went to England, France, and is now collecting welfare because she can't get a job. I know another black girl who can't find stable work either and she went to University and got a degree in her chosen field - she qualifies for welfare (but refused to apply). The point is the black counterparts in the US seem to be doing dramatically better than in Canada.