(Reuters) - President-elect Donald Trump on Friday said he will nominate prominent investor Scott Bessent as U.S. Treasury secretary, a key cabinet position with vast influence over economic, regulatory and international affairs.

"I am most pleased to nominate Scott Bessent to serve as the 79th Secretary of the Treasury of the United States," Trump said in a statement released on Truth Social. "Scott is widely respected as one of the world's foremost international investors and geopolitical and economic strategists."

Wall Street has been closely watching who Trump will pick, especially given his plans to remake global trade through tariffs and extend and potentially expand the raft of tax cuts enacted during his first term.

The choice came after days of deliberations by Trump as he sorted through a shifting list of candidates. Bessent spent day after day at Trump's Mar-a-Lago home in Florida providing economic advice, sources said, a proximity to the president-elect that may have helped him prevail.

Other names that had been floated included Apollo Global Management Chief Executive Marc Rowan and former Federal Reserve Governor Kevin Warsh. Investor John Paulson had also been a leading candidate, but dropped out, while Wall Street veteran Howard Lutnick, another contender, was appointed as head of the Commerce Department.

Bessent, who did not immediately respond to a request for comment, has advocated for tax reform and deregulation, particularly to spur more bank lending and energy production, as noted in a recent opinion piece he wrote for The Wall Street Journal.

The market's surge after Trump's election victory, he wrote, signaled investor expectations of "higher growth, lower volatility and inflation, and a revitalized economy for all Americans."

"Bessent has been on the side of less aggressive tariffs," said Oxford Economics' Ryan Sweet, adding that picking him makes the steep tariffs Trump proposed on the campaign trail less likely.

Bessent follows other financial luminaries who have taken the job, including former Goldman Sachs executives Robert Rubin, Hank Paulson and Steven Mnuchin, Trump's first Treasury chief. Janet Yellen, the current secretary and first woman in the job, previously chaired the Federal Reserve and White House Council of Economic Advisers.

Republican U.S. Senator Lindsey Graham from South Carolina, Bessent's home state, said in a statement: "President Trump's economic agenda is in good hands with Scott Bessent. I look forward to working closely with Scott and President Trump to lower inflation and create the golden age of prosperity for the American people."

ECONOMY'S QUARTERBACK

As Treasury secretary, Bessent will essentially be the highest-ranking U.S. economic official, responsible for maintaining the plumbing of the world's largest economy, from collecting taxes and paying the nation's bills to managing the $28.6-trillion Treasury debt market and overseeing financial regulation, including handling and preventing market crises.

The Treasury boss also runs U.S. financial sanctions policy, oversees the U.S.-led International Monetary Fund, World Bank and other international financial institutions, and manages national security screenings of foreign investments in the United States.

Bessent will face challenges, including safely managing federal deficits that are forecast to grow by nearly $8 trillion over a decade due to Trump's plans to extend expiring tax cuts next year and add generous new breaks, including ending taxes on Social Security income.

Without offsetting revenues, this new debt would add to an unsustainable fiscal trajectory already forecast to balloon U.S. debt by $22 trillion through 2033.

Managing debt increases this large without market indigestion will be a challenge, though Bessent has argued Trump's agenda will unleash stronger economic growth that will grow revenue and shore up market confidence. 

Bessent will also inherit the role carved out by Yellen to lead the Group of Seven wealthy democracies in providing tens of billions of dollars in economic support for Ukraine in its fight against Russia's invasion and tightening sanctions on Moscow. But it is unclear whether he will pursue this, given Trump's desire to end the war quickly and withdraw U.S. financial support for Ukraine.

Another area where Bessent will likely differ from Yellen is her focus on climate change, from her mandate that development banks expand lending for clean energy to incorporating climate risks into financial regulations and managing hundreds of billions of dollars in clean-energy tax credits.

Trump, a climate-change skeptic, has vowed to increase production of U.S. fossil fuel energy and end the clean-energy subsidies in President Joe Biden's 2022 Inflation Reduction Act.

FED FACING

The Treasury secretary is also the administration's closest point of contact with the Federal Reserve. Both Yellen under Biden and Mnuchin under Trump typically met weekly with Fed Chair Jerome Powell, often over breakfast or lunch.

Bessent has floated the idea of creating a "shadow" Fed chair. This would entail nominating as early as possible a presumptive Powell successor to the Fed Board who would then deliver their own policy guidance so that, as Bessent told Barron's last month, "no one is really going to care what Jerome Powell has to say anymore."

Bessent has since said he no longer thinks the idea of a shadow chair worth pursuing, the Wall Street Journal reported.

Powell's term as Fed chair expires in May 2026.

FROM FINANCE TO DC 

Bessent, 62, primarily lives in Charleston, South Carolina, with his husband and two children. He grew up in the fishing village of Little River, South Carolina, where Bessent has said his father, a real estate investor, experienced booms and busts.

Bessent worked for noted short seller Jim Chanos in the late 1980s and then joined Soros Fund Management, the famed macroeconomic investment firm of billionaire George Soros. He soon helped Soros and top deputy Stanley Druckenmiller on their most famous trade - shorting the British pound in 1992 and earning the firm more than $1 billion.

In 2015, Bessent raised $4.5 billion, including $2 billion from Soros, to launch Key Square Group, a hedge fund firm that bets on macroeconomic trends. Key Square's main fund gained about 31% in 2022, according to media reports, but firm assets have declined to approximately $577 million as of December 2023, according to a regulatory filing.