Minnesota on Tuesday joined a lawsuit against the Environmental Protection Agency over its plan to pull back on tighter rules for vehicle greenhouse gas emissions.
The suit's plaintiffs include 17 states and the District of Columbia. They allege the EPA violated the Clean Air Act and didn't follow the agency's own clean-car rules.
"We can see no justification, nor any documented need, to set these protections back," Minnesota Pollution Control Agency Commissioner John Linc Stine said in a statement.
California is leading the lawsuit, which is rooted in public health and environmental concerns.
The new emissions standards would affect model year 2022-2025 vehicles. Former EPA Administrator Gina McCarthy signed off on the standards in January 2017, about a week before President Obama left office.
The MPCA says vehicle manufacturers were on track to meet these new emission standards, and that doing so would save drivers money and reduce as much carbon pollution as 134 coal power plants make in a year.
Current EPA Administrator Scott Pruitt announced last month that the agency would hold off on enacting the standards and further examine them.
Greenhouse gas emissions from vehicles are a main driver of climate change.
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