Stephen Miller, a staunch loyalist to Donald Trump and a controversial political operative, has been appointed as the new White House Chief of Staff. The president announced the decision on Friday, naming Miller to the role after the departure of Susie Wiles.

Miller, 41, has been a significant figure in the MAGA movement for over a decade. He is known among liberals as a hardline conservative figure whose views on immigration and policing have sometimes reportedly caused friction even with Trump. Critics point to him as the architect of several divisive policies during Trump's first term, including the controversial family separation policy at the border. His conservative allies, however, view him as a skilled operative and a devoted servant to Trump's political agenda.

His appointment comes in the wake of significant Republican losses in the recent midterm elections, leaving Trump to navigate a "lame duck" period at the end of his term.

Miller's political journey began during his adolescence in California. Raised in a Jewish family, he found his conservative footing in high school and later at Duke University, where his columns in the school newspaper gained notoriety for their conservative viewpoints and criticism of liberal faculty. During his time at Duke, he gained infamy for defending students accused in a highly publicized rape case, arguing they were victims of a "witch hunt." These early experiences, he has stated, echoed sentiments found in the Trump administration's later policies regarding universities and perceived ideological indoctrination.

After graduating, Miller worked as a congressional staffer for Republican lawmakers, including a stint as press secretary for Rep. Michele Bachmann. He then joined Senator Jeff Sessions' office in 2009, where he developed a reputation for pushing conservative immigration policies. Miller is credited with playing a key role in blocking an immigration reform bill in 2013 that would have provided a pathway to legal status for millions of undocumented immigrants.

His alignment with Trump intensified when Trump launched his presidential campaign in 2015. Miller became a prominent voice within the administration, shaping speeches and championing key policies, particularly concerning immigration. He was a notable proponent of the family separation policy and the travel ban targeting several Muslim-majority nations. Leaked emails later revealed alleged instances of him sharing white nationalist materials, leading to calls for his resignation, though Trump retained him.

Following Trump's 2020 election loss, Miller founded the America First Legal Foundation, a group focused on using legal challenges to oppose progressive policies. He remained a close confidant of Trump during his post-presidency, playing an active role in Trump's 2024 presidential campaign. During this period, Miller made public statements that courted controversy, such as "America is for Americans and Americans only."

In his new role as Chief of Staff, Miller's influence is expected to shape the direction of the remaining term, potentially leading to more aggressive implementation of Trump's policy agenda, particularly in federal immigration reform and deportations. Trump has previously expressed a desire for Miller to communicate his views directly but also voiced concern that Miller might "explain his true feelings," suggesting they could be "going a little bit too far."