I've been interested in the issue of the relative success of recent black immigrants in the US. I'm not sure it's totally proven, that Washington Times reference and others I've seen are virtually useless.

If it's true, it would help disprove the lingering idea in US society of black genetic inferiority. On the other hand, conservatives use it to argue that American blacks are culturally inferior, which is almost as vile. I think it does suggest that racism's role in retarding black economic progress is nuanced, that it involves an interaction between white and black cultures.

Finally, it could just be a selection effect, that generally the most successful and educated Africans and Caribbeans are the ones to immigrate here.