| 1 | But it could become the first in a series of challenges to EPA rules. | |
| 2 | The Clean Air Act mandates the EPA to regulate harmful pollutants such as particulate matter and ozone. | |
| 3 | Yet the government subsequently announced that it would suspend the project and the State Environmental Protection Administration in Beijing said the Xiamen government should reconsider. | |
| 4 | And that means regulatory agencies, such as the U.S. Environmental Protection Agency (EPA), may need to rethink how they regulate the skies. | |
| 5 | The House of Representatives has sought to block such moves, citing "important safety issues" concerning E15 that the EPA has failed to address. |