Top California regulator: Emissions rule change 'blows a hole' in air pollution standards

https://thehill.com/policy/energy-environment/408105-ca-air-pollution-head-new-epa-car-emissions-rule-turns-its-back-on

The chief of the California Air Resources Board is warning that the Trump administration’s proposed changes to car emissions standards “blows a hole” in efforts to meet air-pollution standards.Mary Nichols, chairwoman of the state panel, said the…