Stephen Miller’s rise to become White House chief of staff marks a major change in Donald Trump’s administration. The longtime presidential adviser has built his career on hardline immigration policies, strong political views, and close ties to Trump. His promotion gives him greater control over the president’s daily work and major policy decisions.
Miller began his political career in Washington in 2007. He worked as a press secretary for Republican Representative Michele Bachmann of Minnesota. He later held the same role for Representative John Shadegg of Arizona.
In 2009, Miller joined the office of Alabama Senator Jeff Sessions as his press secretary. He later became the senator’s communications chief. During this period, Miller gained a name as a strong voice on immigration. He urged Sessions to take a tougher position and speak more openly against immigration reform.
Miller played a key role in efforts to block a bipartisan immigration bill in 2013. He wrote a guide to help lawmakers oppose the proposal. His work helped him build close ties with lawmakers who supported stricter immigration rules.
He also became known for his sharp approach to media relations. Miller often clashed with reporters and other political figures in Washington. His style helped create an image of a tough and forceful political aide.
When Trump announced his presidential campaign in 2015, Sessions became the first senator to support him. Sessions later served as attorney general during Trump’s first term. Miller also joined Trump’s campaign and became one of his most trusted advisers.
The relationship between Sessions and Trump later broke down. Sessions had stepped aside from investigations into Trump’s 2016 campaign and election victory. Trump strongly opposed that decision and later removed him from the attorney general role.
Miller, however, remained close to Trump. He continued to advise the president during his first term, the years outside the White House, and his return to power.
Miller is widely seen as one of the main figures behind Trump’s immigration agenda. In his current role as deputy chief of staff for policy, he pushed for tougher enforcement and larger arrest targets. He also supported proposals to suspend habeas corpus rights. These rights allow people in custody to challenge the legal basis of their detention.
Miller also urged the administration to raise its daily immigration arrest target to 3,000. His approach has drawn strong criticism from immigration groups and political opponents.
One major enforcement campaign was Operation Metro Surge in Minneapolis. Federal agents shot and killed two American citizens during the operation. Miller described both victims as domestic terrorists at the time. His comments added to the debate over the administration’s use of force.
During Trump’s first term, Miller also played a major role in the policy that separated migrant children from their parents at the US border. The policy drew widespread criticism in the United States and abroad.
His promotion gives him even greater influence over the White House. The chief of staff manages daily operations, oversees staff, and works closely with the president. The role can also control who gets access to the president and which policy issues receive attention.
Miller’s experience in Congress gives him a strong understanding of how lawmakers work. He is also known for studying policy details, reading reports, and demanding clear results from staff.
His influence may grow further after the departure of Susie Wiles. Some observers saw Wiles as a person who could limit Miller’s influence. Her exit may give him more freedom to shape decisions across the administration.
Miller’s wife, Katie Miller, is also active in Republican politics. She worked as a communications director and press secretary for former Vice President Mike Pence during Trump’s first term. In Trump’s second administration, she became an adviser to the Department of Government Efficiency, an initiative led by Elon Musk to cut public spending and reduce the federal workforce.
She now hosts a podcast aimed at conservative women.
Miller has also remained loyal to Trump through major political setbacks. After Trump lost the 2020 election, Miller helped create America First Legal. The conservative group focuses on issues such as immigration enforcement, election rules, and opposition to diversity, equity, and inclusion programs.
He returned to Trump’s 2024 campaign and later joined the White House as deputy chief of staff for policy and an adviser on homeland security.
However, his promotion has faced criticism from both Democrats and some Republicans. North Carolina Senator Thom Tillis has been among his strongest Republican critics. Tillis urged Trump to rethink the decision and called it a major mistake after the party’s heavy midterm losses.
Former Trump administration officials have also questioned the move. Some believe Miller’s hardline approach is not what voters want after the Republican setbacks. Others warn that his appointment could make it harder for Trump to work with the new Democratic majority in Congress.
The chief of staff position does not require Senate approval. Miller can therefore take up the role without a confirmation vote. His promotion puts one of Trump’s most loyal and divisive advisers at the center of presidential power.
