why do Darwinists support anti-Darwinian legislation?

From George Will at TownHall.com...

First, this interesting observation:

Darwinism opens the mind to the fecundity of undirected, spontaneous, organic social arrangements -- to Edmund Burke and Friedrich Hayek....

Then to public policy...

...in 1973 Congress passed the Endangered Species Act. It said that when identifying an "endangered" or "threatened" species, the government should assess not only disease, predation and threats to its habitat but also "other natural ... factors affecting its continued existence." Natural factors?

Four years later, the act held up construction of a Tennessee dam deemed menacing to the snail-darter minnow. Ed Yoder, a learned and sometimes whimsical columnist, noted that it was under Tennessee's "monkey law" that John Scopes was tried in 1925 for teaching biology in a way considered incompatible with "Genesis." While not equating Tennessee's law with "a measure so enlightened" as the 1973 act, Yoder noted:

"Both measures involve legislative interposition in the realm of biological change; and which will have involved the greater hubris is yet to be seen. Tennessee's ambitions were comparatively modest. It sought only to conceal the disturbing evidence of natural selection from impressionable school children. The Congress of the United States, one is intrigued to learn, intends to stop the nasty business in its tracks."...