Many industrial cities such as Detroit have a history of dominance of employment sector by industries.These industries paid relatively high wages for low-skilled jobs and gave a sense of security ensured by large unions. But at the same time these safe conditions discouraged workers from starting their own businesses or continuing education.
Hence, Declining basic employment sector in industrial cities have left them with a lack of job opportunities for a poorly qualified workforce pushing many families below the poverty line.
He vetoed it for various reasons. For starters, he believed that it was a thing up to individual states and that it infringed on the states right to choose. Another reason was that he believed that such beneficial extension would not make people equal, but rather it would be racist towards the white people. His main argument, however, was that the bill would have a certain group gain rights that they are not entitled to, while a large part of the states does not even have representation in the congress, and that the congress needs to be enlarged first.