While everyone is haring off trying to repeat or even outdo the New Deal, there's still a lot of controversy about whether it actually worked and if it did, which parts did?
What, in the words of a modern liberal, distinguishes a modern liberal from a classical. Arguing back is so easy that it is left as an exercise for the reader.
For example, we hear a little about government failure, but what do you do when a government is actually crazy?