It just seems to me that the rejoinder reading something like this ... "But Roger, the Republicans won't let us do it" ... is an admission of defeat before we leave the starting gate.
The Pragmatic Case for Bernie Sanders, by Christopher D. Cook (The Atlantic)
... On the other side of the ledger, history shows that political and social change emanate from persistent pressure—organizing and arguing for a more just world, not settling for what is deemed “realistic” before getting to the negotiating table. Remember when gay rights and gay marriage were “unrealistic”? Remember when voting rights, desegregation, and other basic justice were far from “pragmatic”? They became real through years of dedicated, principled, idealism—by insisting the unrealistic become real.