The answers to these problems have been known for decades; turns out politicians are more interested in buying votes from the ignorant than they are in doing what's best for the country.
Originally Posted by ScubaSven
It was a poorly worded sentence. The author meant to say: "12% of the US labor force is black. Amongst the black labor force, the jobless rate is 13.8%."
It's not a poorly worded sentence, one just needs to know the meaning of "rate".