President Donald Trump has confirmed that Stephen Miller, one of his most trusted and influential aides, is under serious consideration for the role of national security adviser. This comes shortly after the removal of Mike Waltz from the position, signaling another key shift in the administration’s leadership.

Speaking aboard Air Force One, Trump praised Miller’s strategic role within his team, suggesting that Miller already plays a de facto part in shaping national security decisions.

"I think he sort of indirectly already has that job because he has a lot to say about a lot of things. He's a very valued person in the administration," Trump told reporters. He added that a permanent appointment could be made within the next six months. In the meantime, Secretary of State Marco Rubio is temporarily filling the role.

Stephen Miller, 39, has been a central architect of Trump-era policy since the president's first term, particularly known for his hardline stance on immigration. He was a senior advisor and director of speechwriting from 2017 to 2021 and was instrumental in developing key initiatives such as the travel ban and family separation at the border.

Since Trump’s re-election and return to the White House in January 2025, Miller’s influence has grown. He has led efforts to push through a new wave of executive orders focusing on border control, energy independence, and immigration reform — all pillars of Trump’s renewed America First agenda.

Miller’s potential appointment is not without controversy. He has been a lightning rod for criticism, particularly after a 2019 email leak showed him promoting material from websites associated with white nationalist views. Despite these concerns, Trump has consistently defended Miller’s role and continues to value his loyalty and strategic insight.

If officially appointed, Miller would become one of the most ideologically driven national security advisers in recent history. His elevation to the role would likely mean a continuation — and possible expansion — of Trump’s assertive, unilateralist approach to foreign and domestic security policy.

The final decision on the appointment is expected within the coming months, but Trump’s public comments suggest Miller is already operating with substantial influence on national security strategy.