Eco-Regulations Targeted by Trump: 
Clean Power, Waters of the US, Coal Waste

Here's a look at the top regulations Trump has targeted.

Clean Power Plan

Trump signed an executive order in March directing the Environmental Protection Agency (EPA) to reconsider the Obama administration's Clean Power Plan.

The rule, currently tied up in the courts, requires a 32 percent reduction in carbon-dioxide emissions from existing electric utilities by 2050 from 2005 levels. The Obama administration touted the rule as the cornerstone of U.S. efforts to combat climate change.

Trump's order also lifted all moratoriums on coal leasing activities on federal land, including the three-year ban on new projects that had been imposed by Obama.

Waters of the U.S. rule

Trump signed an executive order in February directing the EPA to rescind or revise the Waters of the United States rule, which gives EPA the authority to regulate pollution of minor bodies of water, like streams and ponds.

The Sixth Circuit Court of Appeals put the rule on hold in 2015 while a number of legal challenges made their way through the courts. The Supreme Court is expected to hear arguments later this term in a fight over whether a district court or a federal court of appeals has jurisdiction in hearing the consolidated cases.

In the meantime, the rule remains in limbo.

Stream Protection Rule

Trump signed a bill to do away with Obama's rule to prevent miners from dumping coal waste into streams and waterways.

Republicans said the rule killed coal jobs and was unnecessary. Environmental groups argued it was needed to keep the waterways from being polluted with toxic metals like mercury and arsenic.