He didn't have to? Why? So a Keynesian Socialist like Krugman could just fill in the blanks to suit his own agenda 20 years later?
Unlike left wing Dims, right wing conservatives and libertarians are color blind. Nobody gives a crap if a person is orange, green or purple with pink poke a dots.
After the welfare reform bill was passed in 1996, 33% of welfare recipients vanished. No welfare fraud? Indeed.