The political ground shifted under the reporting program. It was envisioned as a key part of a nascent federal climate policy, but that policy fizzled while the reporting program was developed. Nevertheless, the program remains very useful. The informational and research value of the reporting data should not be minimized, especially in light of the real-world implications of past environmental disclosures programs. The data can and will support EPA regulation under the CAA, most notably of permitting of modified sources and performance standards for existing stationary sources. States are already actively using the data and are likely to become even greater consumers in the future.