WASHINGTON -- In a pair of tweets Thursday afternoon, President Donald Trump announced that Environmental Protection Agency Administrator Scott Pruitt will step down from his role in the administration.
Trump announced that EPA Deputy Andrew Wheeler will step in as acting Administrator starting next week.
The announcement comes after Pruitt was the target of a number of controversies involving his travel spending and security detail.
An ethics cloud hung over Pruitt for months, as lawmakers from both parties, environmental groups and government watchdogs raised questions about his spending, housing arrangements, security team and raises for political appointees.
All told, Pruitt left EPA having faced more than a dozen inquiries or reviews into his practices at the agency, including his first-class plane travel, a room that he rented from a lobbyist at $50 per night and the installation of a soundproof booth in his office.
But at the same time, Pruitt was one of the most effective implementers of the President's agenda. Coming into office as a critic of EPA and a climate skeptic, Pruitt moved aggressively to scale back Obama-era moves on climate change, automobile pollution standards and other industrial pollutants.
As recently as June 8, Trump praised Pruitt, telling reporters on the South Lawn of the White House that the EPA administrator was "doing a great job within the walls of the EPA," and that "we're setting records."
"Outside, he's being attacked very viciously by the press. I'm not saying that he's blameless, but we'll see what happens," Trump said then, and didn't answer a reporter who asked if Trump was "tired' of Pruitt.
But as summer unfolded, the amount of pressure on Pruitt began to near its breaking point as former staffers came forward to air their concerns and accusations about the EPA chief. Former aide Kevin Chmielewski told CNN that Pruitt and his staff kept "secret" calendars and schedules to hide controversial contacts with industry representatives and The Washington Post and The New York Times revealed aspects of testimony Pruitt aides gave to Congress about the EPA administrator enlisted them for personal errands.
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Pruitt, an Oklahoma Republican, came to the job as one of the EPA's chief critics and was seen as someone philosophically at odds with the agency Trump tapped him to run.
While serving as Oklahoma's attorney general, Pruitt was one of the chief architects of the legal battle against Obama's climate change policies and repeatedly sued the agency. He described himself in his biography for that job as "a leading advocate against the EPA's activist agenda."
Critics of Pruitt's nomination drew on his past statements to label him as a "climate skeptic," a term for someone who denies the scientific link between human activity, climate change and associated impacts.
Along with Trump, who once said that "global warming was created by and for the Chinese," Pruitt oversaw the efforts to dismantle major climate regulations. Trump announced at the beginning of June last year that he would withdraw the US from the Paris climate accords.
Pruitt announced in October he would withdraw the Clean Power Plan, an Obama-era regulatory structure to limit greenhouse gas emissions on a state-by-state basis.
Inquiries and reviews into Pruitt's practices at EPA
Pruitt incurred a sizable number of investigations into his spending and practices at EPA, including inquiries by the House, Senate, the EPA itself and the White House. Among them were inquiries into Pruitt's travel practices, spending within the agency and use of email.
The EPA inspector general is reviewing all of Pruitt's 2017 travel, which is expected to include multiple taxpayer-funded weekend trips that Pruitt took to Oklahoma, as well as official travel to Italy and Morocco. The inspector general told Congress in a May 2018 letter that he expects the review will be completed by the end of September.
A different EPA inspector general review involves Pruitt's travel practices, suggesting that it will review Pruitt's use of his round-the-clock security detail, which travels with him even when off-duty on family vacations.
Separately, South Carolina Rep. Trey Gowdy, the Republican who chairs the House Oversight Committee, has asked EPA to justify Pruitt's use of first or business class seats on flights.
This spring, Gowdy said Pruitt was not forthcoming with records.
There are also multiple inquiries into Pruitt's lease of a $50-a-night Capitol Hill condo in 2017 from lobbyist Vicki Hart. Hart's husband, J. Steven Hart, who is also a lobbyist, met with Pruitt at the same time that he was leasing that room.
A review of EPA emails showed deeper ties between Pruitt and lobbyists, including that a family friend of those lobbyists was considered for a position at EPA.
Both the EPA inspector general and the Government Accountability Office (GAO) are reviewing an April 2017 meeting that Pruitt had with the National Mining Association regarding the Paris climate agreement, which critics said may have violated anti-lobbying laws.
GAO found in April that Pruitt's installation of a $43,000 soundproof phone booth violated federal spending laws because EPA didn't notify lawmakers that it exceeded the $5,000 limit for agency heads to improve their offices. Pruitt and other EPA officials said Pruitt used the booth to receive classified information and to talk with White House and other administration officials.
Several reviews have to do with Pruitt's use of email. Senate Environment and Public Works Chairman John Barrasso, a Wyoming Republican, began looking into reports that Pruitt had four EPA email addresses, at least one of which was not disclosed. EPA's inspector general said in May that it would review Pruitt's use of multiple email accounts, at the request of Senate Democrats.
Compounding all of these bruising headlines have been semi-frequent accounts of Pruitt's personal conduct and use of official resources. Reports included Pruitt wanting to use sirens to get to an upscale French restaurant in Washington, having security and aides help him find a preferred lotion and pick up a used mattress from the Trump hotel in Washington. The anecdotes offered ammunition for critics of the now-outgoing EPA chief as a creature of the swamp Trump promised to drain.