Musk is the world's richest man, owns one of its biggest communications platforms and is increasingly politically active. Washington is seeing how potent a blend that is.

Trump's statement opposing the bill came out several hours after Musk's posts.

Republicans are coming under pressure from President-elect Trump’s ally, billionaire Elon Musk, to drop the funding bill they negotiated with Democrats, which could mean a shutdown before Christmas.

Elon Musk appears to have revealed that the Securities and Exchange Commission issued him a "settlement demand" related to his $44 billion purchase of Twitter.

Elon Musk validated the use of GLP-1 drugs in a post on X on Wednesday. But Robert F. Kennedy Jr. has said he's opposed to Americans using them to fight obesity.

Elon Musk spent over a quarter of a billion dollars to help get Donald Trump back in the White House, according to newly released campaign finance records.

Work from home policies came under fire from Elon Musk as he and Vivek Ramaswamy took their plans to reduce government waste to the floors of Congress Thursday.

Both Musk and Ramaswamy met with Congress members on the Hill earlier today.

A judge again rejected Elon Musk's $50 billion Tesla payday. The compensation package would have made Musk the highest-paid executive ever.

Elon Musk and Vivek Ramaswamy will head to Capitol Hill next week to meet with Republicans on their plan to slash regulations and other parts of the federal government.

The president-elect was also joined at Mar-a-Lago with family members on Thanksgiving following a week in which Trump claimed Mexico would stop border crossings, "effective immediately."

Trump appointed Elon Musk as co-head of the Department of Government Efficiency.

On Tuesday, SpaceX launched the most powerful super-heavy Starship rocket on its sixth test flight, but were forced to perform a splashdown after an issue with the booster.

President-elect Donald Trump attended a SpaceX “Starship” rocket launch on Tuesday in Texas alongside SpaceX CEO Elon Musk.

NASA astronaut Dr. Charlie Camarda discusses the dangerous leak on the International Space Station and how Donald Trump and Elon Musk may change NASA space policy.

What we know about Elon Musk’s ‘Department Of Government Efficiency’ and bromance with Donald Trump.

Donald Trump's announcement that Elon Musk and Vivek Ramaswamy will lead a newly formed Department of Government Efficiency has alarmed some government ethics experts.

ABC News’ Elizabeth Schulze reports on how tech billionaire Elon Musk was able to gain access to President-elect Donald Trump’s inner circle and gain so much political influence.

Donald Trump has announced that Elon Musk and Vivek Ramaswamy, a former presidential candidate and ally of Trump, will lead a new "Department of Government Efficiency."

Tricia McLaughlin, former senior adviser to Vivek Ramaswamy, discusses the work to be done under what President-elect Donald Trump is calling a new "Department of Government Efficiency."

Adam Clark Estes, senior technology correspondent at Vox discusses the significance and influence billionaire Elon Musk has had in the Trump orbit over the last week.

The Washington Post’s Drew Harwell explains how billionaire Elon Musk has leveraged his money to further his political objectives.

Several people close to Donald Trump have stressed to ABC News the significance and influence billionaire Elon Musk has had in the Trump orbit over the last week.

Several people close to Donald Trump have stressed to ABC News the significance and influence billionaire Elon Musk has had in the Trump orbit over the last week.

The president-elect returned to golf at Trump International, the same course where an assassination attempt was made against him in September.

The president-elect had Elon Musk listen in and speak with Ukrainian President Zelenskyy.

Elon Musk joined Donald Trump's phone call with Ukrainian President Volodymyr Zelenskyy on Wednesday, multiple sources with direct knowledge of the call told ABC News.

The president-elect handed the phone to Musk at one point during Zelenskyy's congratulatory call on Wednesday, sources told ABC News. The billionaire was a major presence during Trump's campaign.

Elon Musk, the world's wealthiest person, has campaigned in support of Trump.

Philadelphia District Attorney Larry Krasner sought an emergency injunction to stop Elon Musk's America PAC's million-dollar giveaway.

Musk, the world's richest person, has sought to help elect Donald Trump.

The Philadelphia district attorney sued Elon Musk and his super PAC on Monday over the billionaire's controversial $1 million giveaway.

The Justice Department has warned Elon Musk's America PAC that his $1 million giveaway to swing-state registered voters may violate federal law, a source says.

Musk, the world's richest person, is a prominent supporter of Trump.

Former President Donald Trump’s billionaire supporter has awarded checks to several voters who signed his petition to support the First and Second Amendments. ABC News’ John Santucci reports.

ABC’s Olivia Rubin reports on how billionaire Elon Musk is using his megaphone to allegedly amplify misinformation to millions while on the campaign trail for former President Donald Trump.

In a series of town halls, tech billionaire Elon Musk has sought to harness his power as an influencer to help return Donald Trump to the White House.

In a letter to the Federal Communications Commission, 100 space researchers asked for the agency to pause new satellite launches to allow for environmental review.

In a letter to the Federal Communications Commission, 100 space researchers asked for the agency to pause new satellite launches to allow for environmental review.

The Philadelphia district attorney sued Elon Musk and his super PAC on Monday over the billionaire's controversial $1 million giveaway.

Elon Musk has been in regular contact with Vladimir Putin since 2022, according to an article in the Wall Street Journal on Thursday.

Local election officials have been taking to X to refute owner Elon Musk's false election claims -- but their reach pales in comparison to Musk's 200 million followers.

The tech titan and Russian President Vladimir Putin have been in regular contact since 2022, according to the Wall Street Journal.

The giveaway seems illegal, but occupies a blurry area of law, experts told ABC News.

Businessman Mark Cuban told ABC News that with two weeks until Election Day, the vice president has momentum on her side, but that she can improve as a salesperson.

Anna Massoglia, editorial and investigations manager at OpenSecrets talks to ABC News Live about the recent monetary giveaways by Elon Musk's America PAC.

While speaking at a town hall in Pennsylvania, tech CEO and Trump supporter Elon Musk repeated false conspiracy theories claiming that voting machines rig elections.

Tesla is set to hold an event Thursday titled “We, Robot” where the company is expected to unveil a fully autonomous vehicle that CEO Elon Musk has called a “Cybercab.”

ABC News’ Karen Travers and Katherine Faulders with the latest news from the campaign trail.

In a statement Monday, the White House decried a now-deleted post by Elon Musk on X as "irresponsible."