I would like to see Mr Sanders proposed rates for the middle class and what range of income he deems to be middle class. Middle class in SF or NYC is much diff

I would like to see Mr Sanders proposed rates for the middle class and what range of income he deems to be middle class. Middle class in SF or NYC is much different than say Detroit, MI. Housing costs, cost of living, and local taxes are not really factored into the current federal tax rates, and higher rates on the middle class could hurt a lot of people.