The news arrived via Donald Trump's Twitter account, where he announced that Andrew Wheeler, current deputy of the EPA, will take the reins starting Monday until a permanent successor can be nominated/appointed.
The media have hounded the White House about Pruitt for months, with every news briefing containing a question about some action of his or another.
Mink told DCist after Pruitt's resignation was announced, "It's not like I can take all the credit for this".
For Carol McKinny, a member of Indivisible Lake County - a group that resists the Trump administration agenda on a number of issues by incentivizing local volunteers - Pruitt's departure is on some level a win for the nation.
"Within the Agency Scott has done an outstanding job, and I will always be thankful to him for this", added Trump, who gave no reason for Pruitt's departure.
Ongoing discussions among refiners, farm groups, politicians and officials on changes to the RFS have led to a growing rift between two of Trumps constituencies: the oil and farm lobbies.
Pruitt, a close ally of the fossil fuel industry, also was known for questioning the human role in global climate change. Before that he worked on Capitol Hill and, like Pruitt, he's a target for liberals who see him as a champion of polluters and climate change deniers.
Among other complaints, Pruitt is alleged to have pushed his aides to secure a $200,000 political-fundraising job for his wife; required staffers to perform non-official work; and insisted on traveling first-class or via private jet despite aides' objections.
Top White House advisers have been encouraging Mr Trump to dismiss Mr Pruitt for months, amid mounting allegations of unethical conduct, improper spending and abuses of power.
Spokespeople for the EPA didn't immediately respond to an email seeking comment.
If the rights of religious conservatives like him aren't protected, Pruitt said darkly, "it leads to anarchy, it leads to rebellion", something he said would happen in the coming decades. But will his scandals ruin his chances of a political future back in the Sooner State?
"We're proud of him for that", Pollard said.
Pruitt said his $50-per-night condo lease from an energy lobbyist's wife received ethics approval from the agency, though the EPA's inspector general's office said its review was based on incomplete information. 'I think Oklahomans still love him, support him and trust him.
"It has become increasingly challenging for the EPA to carry out its mission with the administrator under investigation", said Barrasso, who is from Wyoming.
In his resignation letter today, Pruitt told Trump that "it is extremely hard for me to cease serving you in this role first because I count it a blessing to be serving you in any capacity, but also, because of the transformative work that is occurring".
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