As areas such as Detroit put the new immigrants to work, they can lay cobblestones, and they can paint, and they can plant trees and plants, etc, and they can do outdoor landscaping, etc.
In many poor nations such as Colombia they paint everything bright cheerful colors, blue, and yellow, and bright white, etc, and they have plants all over, etc. Our poor neighborhoods can do the same thing, the immigrants can go in and they can paint our poor neighborhoods bright cheerful colors, etc, as they come to America.
Cobblestone streets and buildings painted in bright cheerful colors, and plants all over, etc, that would be great.
Salute,
Tony V.