We have created a permanent underclass populated by mostly blacks and Hispanics who don't have the education to take skilled jobs. And they find that with the 1.1 million legal immigrants, mostly unskilled and uneducated who enter annually it is more and more difficult to find jobs and even if they do, the wages are depressed by the surplus of labor.
Immigration has made it far worse for native born blacks and Hispanics, especially those without an education.
The way to get minority votes is to stop the flood of immigration that is taking away their jobs and depressing their wages.
You've also got a significant percentage of the traditional non-minority US population falling into those catergories. The problems have to do with the types of education being offered and competition for jobs, which causes a downward spiral in opportunity and wages. High schools need to go back to vocational opportunities and knowledge about running a business. The competition for jobs from immigrants, legal or not, is causing rift among ethnic groups and a lack of job stability/opportunity. There has to be less difficulty in starting and operating a small business enterprise, and neighborhoods have to be stable enough for commerce to occur.
The whole thing with the excess of black and hispanic labor seems intentional, to keep wages down and upward mobility from happening. JMHO