President Trump’s administration is rolling back a rule on waters and wetlands set during the Obama administration.

The 2015 regulation protected many U.S. wetlands and streams, defining which bodies of water were federally protected.

Administrator of the EPA Andrew Wheeler says the previous rule was an “egregious power grab” with over-regulation of even isolated ponds. He says a proposed substitute rule would more clearly define where federal jurisdiction begins and ends.

The rule’s rollback could benefit many farmers, home builders and other business interests.

Congressional Relations Director Don Parrish says the 2015 rule created uncertainty about where farmers could cultivate land.

The American Farm Bureau Federation says this rollback is a good move for farmers. They say the President Obama-era rule harmed economic development and violated property rights.

Environmentalists say the Trump administration’s move will leave millions of Americans with less safe drinking water and damage wetlands that prevent flooding.