It's an interesting thing if the environmentalists don't have anything to say about paving over wetlands.
I think plenty of environmentalists (including hunters, who were environmentalists before anyone had ever heard the term) say plenty when there are plans to pave over wetlands. Concerns about paving over a wetland here in Iowa not so long ago resulted in a highway being routed around the wetland. And since it was a particularly unique wetland, the state bought it from the private owner, thus preserving and protecting it for the future.
