Valley Forge National Historical Park isn't the only unit of the national park system threatened by development on private lands that fall within its borders. Far from it. The latest case involves Virgin Islands National Park, where development on roughly 1,400 privately owned acres within the park's borders is harming the park's resources.

We've heard lots about how bountiful the National Park Service's 2008 budget is thanks to the Bush administration. Well, don't let that talk make you think all is great across the park system.