Stephen Miller’s Fingerprints Are on Everything in Trump’s Second Term

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The deputy chief of staff has played an outsize role in immigration—and amassed more power than almost anyone else at the White House

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Josh Dawsey

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Rebecca Ballhaus

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June 20, 2025 9:00 pm ET

Stephen Miller spoke at an April event in Warren, Mich., marking President Trump’s first 100 days in office. Photo: Jeff Kowalsky/AFP/Getty Images

Stephen Miller wanted to keep the planes in the air—and that is where they stayed. 

When a federal judge in March told the Trump administration to turn around flights of deported migrants headed to El Salvador, senior officials hastily convened a Saturday evening conference call to figure out what to do.

If they didn’t return the passengers, they would be defying a court order, some administration officials worried. Miller, who is President Trump’s deputy chief of staff, pushed for the planes to keep flying, which they ultimately did. The judge would later say that allowing officials to defy court judgments would make a “solemn mockery” of the Constitution.

The 39-year-old immigration hawk, who has been by Trump’s side since the 2016 campaign, has emerged as a singular figure in the second Trump administration, wielding more power than almost any other White House staffer in recent memory—and eager to circumvent legal limitations on his agenda.

He has his own staff of about 30 and a Secret Service detail, which White House officials said was because he had received death threats and serves as homeland security adviser. He has been responsible for the administration’s broadsides against universities, law firms and even museums. He has written or edited every executive order that Trump has signed.

Miller had considerable sway in Trump’s first term. But when aides at the time suggested promoting Miller to a leadership role at the Department of Homeland Security, Trump declined, according to a former administration official, telling aides he thought Miller wasn’t leader material.

His influence has expanded sharply since, thanks largely to his steadfast loyalty to Trump. This account of Miller’s tenure is based on interviews with current and former White House officials, Trump advisers and other prominent Republicans.

Some of Miller’s colleagues said they were alarmed by some of the legal maneuvers that Miller has proposed for executing the administration’s anti-immigrant agenda, and Trump has gently ribbed him for being too “happy” about deportations.

Miller, who has written or edited every executive order signed by Trump in his second term, attended a May event of the Make America Healthy Again Commission. Photo: Jacquelyn Martin/Associated Press

Miller, who isn’t a lawyer, is the official who first suggested using the wartime Alien Enemies Act to deport migrants, which the Justice Department pursued. He also privately, then publicly, floated suspending habeas corpus, or the right for prisoners to challenge their detention in court, which the administration hasn’t tried. That prompted pushback from other senior White House and Justice Department officials. 

His orders to increase arrests regardless of migrants’ criminal histories set off days of protests in Los Angeles. Miller coordinated the federal government’s response, giving orders to agencies including the Pentagon, when Trump sent in the Marines and the National Guard, according to officials familiar with the matter.

Miller’s portfolio covers almost every issue Trump is interested in. In recent months, he talked to CEOs about a coming tariff announcement; joined a meeting between Meta Chief Executive Mark Zuckerberg and Trump about the company’s antitrust case; and met with other tech companies on artificial intelligence.

Even some posts at cabinet agencies have been described by administration officials as reporting directly to Miller, effectively bypassing cabinet secretaries.

There are some limits to his influence. He was supportive of Meta’s push to settle its antitrust case, which fell flat. Trump last week signaled concerns that the administration’s deportation policies were too aggressive, calling for a pause in some deportations that he has since rolled back. Trump, asked how Miller’s directives on deportations squared with his own, declined to put distance between the two of them. “We have a great understanding,” Trump said.

The aggressive posture has started to spark some voter backlash, with polls showing Trump’s approval rating on immigration and deportations has turned negative.

Several White House staffers said Miller always takes the most “extreme” view of any issue, and his positions have cost the administration in court. In Trump’s first 100 days back in office, courts issued nationwide injunctions in 25 cases against the federal government, compared with six in his entire first term and four during the Biden administration, according to a report by the nonpartisan Congressional Research Service. Several cases have already reached the Supreme Court, which has ruled against Trump on some immigration cases.

“I think the administration has miscalculated and overstepped,” said Skye Perryman, who leads Democracy Forward, an organization that has repeatedly sued Trump.

Miller has responded to the courts’ intervention by denouncing it as “judicial tyranny.” His allies argue illegal border crossings are down to almost zero because his aggressive proposals are deterring migrants.

“Stephen Miller is one of President Trump’s most trusted and longest serving aides for a reason—he delivers,” said Karoline Leavitt, the White House press secretary.

In the wilderness

Miller stuck by Trump when many staffers quit their jobs after the Jan. 6, 2021, attack on the Capitol. He had helped draft Trump’s speech that morning, and worked until 12 p.m. on Jan. 20—the day Trump’s first term ended—telling the officer taking his badge he would be back in four years.

“Sixteen Hundred Pennsylvania Avenue is the greatest address in the world, and though we now leave these gates, rest assured, this is not goodbye,” he wrote to colleagues.

Three months later, Miller launched a nonprofit, America First Legal, aimed at countering what Miller described as a “years-long, one-sided legal assault” by the left. “Now, we must turn the tables,” he said at the time.

Over the next four years, it filed dozens of lawsuits, many of which are ongoing, categorized on its website under topics including “DEI,” “Woke Corporations” and “Women’s Sports.” The group’s targets are now under fire from the Trump administration, too. 

Miller speaking with reporters outside the White House in January. Photo: Francis Chung/Press Pool

In 2022, the group called on the Education Department to stop distributing federal funds to universities where it alleged antisemitism was festering. Three years later, the Trump administration would do just that at universities including Harvard, Columbia and Northwestern.

In 2024, Miller’s group helped 16 Republican-led states sue the Biden administration over a policy that protected illegal immigrants married to U.S. citizens from deportation. A judge ruled in the states’ favor, and the Trump administration overturned the policy this year.

By the time Trump returned to the White House, the group had about two dozen lawyers on staff and had raised more than $60 million from donors, whose identities it doesn’t disclose. The group paid Miller more than $500,000 last year, according to his financial disclosure.

Meanwhile, Miller continued to play an active role across the Republican Party, even if his outreach wasn’t always welcome.

Congressional aides fielded lengthy calls from Miller about illegal immigration, often without any specific requests. One likened him to a grandmother who wouldn’t stop talking and said his calls were akin to listening to a podcast. Others said he would call to scold aides about how they had framed a social-media post on a particular issue or criticizing the way they had worded a press release. 

As a House committee prepared for then-Homeland Security Secretary Alejandro Mayorkas to testify, Miller came to the Hill to play the role of Mayorkas, aides said. During the prep, he answered questions as the secretary—but also chimed in to give lawmakers advice on questions.

Miller was determined to kill a bipartisan bill pushed by Republican Sen. James Lankford of Oklahoma in 2024 on the border and regularly called House Speaker Mike Johnson.

He also called the Republican National Committee to offer his advice on how the party should communicate on immigration, sometimes offering his thoughts on what the RNC chairman could tweet, people familiar with the discussions said.

He was a regular visitor to Mar-a-Lago during the campaign, meeting with Trump above his ballroom. Campaign aides say Miller always wanted to talk more about immigration. Trump’s top pollster, Tony Fabrizio, and his other aides wanted to keep the message on the economy. Trump staffers started displaying ominous photos of migrants at his events.

Some posts at cabinet agencies have been described by administration officials as reporting directly to Miller. Photo: Win McNamee/Getty Images

Hundreds of orders

In the first term, Trump was largely unprepared to govern. Miller regularly complained then that others in the administration tried to block his immigration decisions, and outside lawyers would stymie their efforts. This time, Miller came in determined to correct that.

He brought hundreds of proposed orders to the White House as well as his own staff. Russell Vought, the onetime treasurer of America First Legal, is now the White House budget chief. Reed Rubinstein, the group’s senior vice president, was nominated as legal adviser of the State Department. Matt Whitaker, a board member, is the U.S. permanent representative to the North Atlantic Treaty Organization.

He now tells other staffers how to behave around Trump, people who have heard his comments say, and upgraded his office from one on a different floor to one steps from the Oval Office. 

During the first term, Miller would push for hard-line policies that others blanched at, including advocating for several dozen countries to be added to the travel ban list of seven, a former administration official said. People laughed, but he was serious, the official said. This time, Trump announced a ban that covered a dozen countries. 

He keeps in Trump’s good graces by giving Trump ideas—but more importantly, helping the president carry his own out.

Administration officials noted how Miller shut down discussion about whether the U.S. should bomb Houthi targets in a Signal chat that was accidentally shared with The Atlantic’s editor in chief. As the vice president and top national security officials discussed options, Miller weighed in. 

“As I heard it, the president was clear,” Miller said. “Green light,” he added. 

Earlier this month, Leavitt, the press secretary, interviewed Miller at a private event for Republican donors at the Four Seasons in Washington.

Miller, who grew up in Santa Monica, Calif., said large swaths of Los Angeles were engaged in a “rebellion,” according to people present.

Los Angeles had become like Cancún, he said—it was fine to visit, but not good for its own citizens. To conclude the event, Leavitt told the crowd that Miller needed to return to his work of deportations.

Miller smiled in response, and then left to return to the White House.

Write to Josh Dawsey at Joshua.Dawsey@WSJ.com and Rebecca Ballhaus at rebecca.ballhaus@wsj.com