EPA

Updated at 6:01 p.m. ET

Scott Pruitt will no longer lead the Environmental Protection Agency, President Trump announced Thursday afternoon via Twitter.

"I have accepted the resignation of Scott Pruitt," Trump tweeted. "Within the Agency Scott has done an outstanding job, and I will always be thankful to him for this," Trump also wrote.

A coalition of 17 states and the District of Columbia, led by California, is suing the Environmental Protection Agency over its plan to change vehicle efficiency standards. The states are asking a court to review the EPA's proposed actions, arguing that they violate the Clean Air Act.

"We're not looking to pick a fight with the Trump administration, but when the stakes are this high for our families' health and our economic prosperity, we have a responsibility to do what is necessary to defend them," California's attorney general, Xavier Becerra, said.

The head of the Environmental Protection Agency, Scott Pruitt, has proposed a new rule that restricts scientific research that can be used by the agency for its regulatory decisions.

The proposed rule only allows the use of studies that make all data publicly available for anyone to analyze. Pruitt proposed the new rule as a way to make the agency's decision-making more "transparent, objective and measurable."

The Environmental Protection Agency has removed a toxic waste site flooded by Hurricane Harvey from a special list of contaminated sites that require the personal attention of the agency's leader, because it says there's been significant progress on a cleanup plan.

As allegations mount of EPA Administrator Scott Pruitt violating ethics policies and misusing taxpayer money, President Trump has repeatedly defended him. "Scott is doing a great job!" he said in one tweet.

Pruitt is one of the administration's most high profile members, and is often lauded as one of its most effective.

"Administrator Pruitt has fearlessly executed President Trump's regulatory reform agenda, there's no doubt about that," says Thomas Pyle, president of the American Energy Alliance.

The head of the Environmental Protection Agency is fending off multiple accusations that he misused taxpayer funds and maintained improper ties to companies regulated by the EPA.

The Trump Administration today moved to weaken fuel economy standards for automobiles, saying the current ones are inappropriate and wrong.

The long-anticipated move is a win for auto manufacturers, which had lobbied for lower fuel-economy standards. It's also a rejection of one of former President Barack Obama's biggest efforts to combat climate change by curbing greenhouse gas emissions.

President Trump's nominee for deputy administrator of the Environmental Protection Agency, Andrew Wheeler, has spent much of his career working for less oversight from the agency.

via Facebook, Union County Public Schools, KY

The U.S. Environmental Protection Agency awarded a $40,000 Diesel Emission Reduction Act rebate to Union County Schools on Thursday.

In 2015, the top toxicologist for the state of Texas, Michael Honeycutt, was interviewed on Houston Public Radio. At the time, the Environmental Protection Agency was pushing for tighter limits on ozone, a type of air pollution that is hazardous for people with asthma and other respiratory diseases.

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