In a letter to the Treasury secretary, the Democratic senator warned against meddling with a system that processes trillions of dollars of transactions.

Treasury Secretary Scott Bessent gave Mr. Musk’s representatives at the so-called Department of Government Efficiency a powerful tool to monitor and potentially limit government spending.

The Treasury Department has also eliminated the option of buying as much as $5,000 in extra inflation bonds, beyond the $10,000 annual limit.

From national security to home insurance, the president has quickly changed America’s climate adaptation policies in important ways.

The president said the planned duties were a response to China’s failure to curb fentanyl exports.

Scott Bessent, President-elect Donald J. Trump’s choice to be Treasury secretary, will be in charge of steering the president’s economic agenda if confirmed by the Senate.

Financial disclosure forms show hundreds of millions of assets including property in the Bahamas and investments in Bitcoin and bets against China’s currency.

President-elect Donald J. Trump has moved beyond the team-of-rivals approach from his first term and chosen economic aides who will defend tariffs and tax cuts.

A force fighting Sudan’s army in a brutal civil war committed massacres and rape that amount to genocide, the Secretary of State said, two decades after a finding of genocide in the same region.

The authorization comes after rebels toppled the Syrian government last month and is intended to allow humanitarian groups to operate more freely without running afoul of U.S. sanctions.

The agency imposed penalties on a company it blamed for supporting the Chinese hacking group Flax Typhoon in a 2022-23 infiltration.

With a lucrative tax credit, the Biden administration is hoping to establish a new industry that might help fight climate change.

The Treasury Department also released an additional $3.4 billion in budget aid as the Biden administration rushes assistance to Kyiv in its final weeks in office.

The episode comes at a particularly sensitive moment, just as the Biden White House is dealing with one of the most far-reaching, and damaging, hacks into American infrastructure in the cyberage.

The Treasury secretary urged Congress to protect the full faith and credit of the United States by raising the debt limit.

Stephen Miran, who served during Donald Trump’s first term and now works at a hedge fund, has accused the Biden administration of manipulating markets.

Fewer people will be able to afford electric cars and trucks if President-elect Donald J. Trump and Republicans in Congress eliminate a $7,500 federal tax credit.

© Philip Cheung for The New York Times