President-elect Donald Trump is expected to name hedge fund manager and Goldman Sachs alum Steven Mnuchin as his pick for treasury secretary as soon as Wednesday, senior Trump transition sources confirmed to ABC News.
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Mnuchin was a long-time Democratic donor and served as national finance chairman for Trump's presidential campaign. He currently serves as co-founder co-CEO and chairman of Dune Capital Management.
Mnuchin previously worked at Goldman Sachs for 17 years, where he rose to become partner. When he left Goldman, he founded RatPac Dune Entertainment, which financed several films, including "Avatar" and the X-Men movies.
The selection of Mnuchin as Trump's pick for treasury secretary, which requires Senate confirmation, marks the first major economic post filled by Trump. If confirmed to the position, this would be Mnuchin's first foray into the public sector.
During the campaign, Trump said he would dismantle the Obama administration's 2010 banking regulations known as Dodd-Frank, which Mnuchin has indicated should be re-examined.
"We're not taking a position on whether we support that or don't support it. We're saying a lot of things need to be looked at. We think Dodd-Frank needs to be looked at. Obviously there is an important concern of protecting depositors," Mnuchin said in a July interview with CNBC.
Democrats were quick to pounce on Trump's decision to pick Mnuchin to run the Treasury Department.
“So much for draining the swamp. Nominating Steve Mnuchin to be Treasury Secretary...is a slap in the face to voters who hoped he would shake up Washington," Adam Hodge, communications director for the Democratic National Committee said in a statement. "Trump is already heading into office as the most corrupt, conflicted, and unpopular president-elect in history, and now he’s breaking his signature promise to the voters who elected him.”
Mnuchin previously donated to Hillary Clinton and Barack Obama's Senate and presidential campaigns.
ABC News' Alana Abramson contributed to this report.
A previous version of this story described Steven Mnuchin as a billionaire. ABC News can’t independently verify his net worth.