Well you seems to be saying that the NRST would be a fairer system and becuase it is a fairer system it will not be adopted. You might be right but that is not the fault of the system. Re earned income credit. As I understand it everyone gets a rebate of several thousnad dollars to compendsate for taxes paid on thier first 20,000 or so of income. The idea being to lesson the tax burden the first 20,000 or so of income which in the case of poor people is thier only income. So the system bends over backward to protect the income of poor people from taxes. Also I would tink that it would be possible to apply for earned income assistance, maybe not in the same way, but still possible.
Although it might be a great campaign issue, I don't think it would ever provide the benefits its dreamers foresee. I guess I see that as the difference between "theory" and "reality".
Not if there is no income tax.
Maybe there would still be welfare and AFDC.