A federal court ruling in favor of environmentalists is forcing the Forest Service to suspend more than 1,500 permits for activities ranging from fire prevention to Boy Scout meetings and also is threatening to delay cutting of the Capitol's Christmas tree until after the new year. A Forest Service regulation that allowed projects determined as having minimal environmental impact to be exempt from environmental studies and reviews was challenged by the Earth Island Institute. Judge James K. Singleton of the Eastern District Court of California ruled in July against a project to remove charred and damaged trees, which could kindle...