Trump posted on Truth Social on November 6 that Wiles would be replaced. Financial News reported that her successor is current deputy chief of staff Stephen Miller, who takes over from November 9. Newspim said Trump described Miller as one of the aides he trusts most.

Financial News reported that Wiles will leave the government and head Trump Political Operation (TPO), overseeing political organizations, elections and political funds. TPO is not a formal government body; media use the term for Trump's fundraising and outside political groups. In a statement on X, Wiles called serving the president the honor of her life and said her commitment would not change.

The first major reshuffle after the midterm defeat

The change came three days after Republicans lost heavily in the November 3 midterms. Newspim, citing the Financial Times, said Wiles was seen as partly responsible this year for poor public messaging, pushing ahead with the Iran war, weak consultation with Congress and an inadequate response to the war's effect on prices. That is the FT's assessment; whether the White House gave such reasons has not been confirmed.

Miller has been at Trump's side since the first term, and Financial News described him as a central figure in planning and driving the mass-deportation policy. With a policy-minded figure now running the president's schedule and information flow, some expect the White House's internal coordination to change, though the actual style will show only after he takes office.

Financial News said analysts see the move as possibly the first step in a broader cabinet shake-up. When the new Congress convenes in January, Democrats will lead the House and have already said they will broadly investigate the administration's immigration policy, so there is concern that Miller's appointment could deepen partisan clashes.

Questions for Korea and Northeast Asia

According to a Newspim analysis on November 4, tariff powers rest largely on executive orders and Section 232 of the Trade Expansion Act, so they are unlikely to be withdrawn quickly even after a shift in congressional power. The same analysis said pressure on Korea to invest in Alaska LNG may ease because it was tied to Trump's political support for an Alaska Senate race. How a Miller-led White House will change trade policy has not been confirmed.

On security, Newspim noted that revising the nuclear agreement to build nuclear-powered submarines and expand enrichment and reprocessing rights requires US congressional consent, raising the hurdle. It cited a February letter from four Democratic senators urging strict nonproliferation standards. The same report quoted a diplomatic source saying a Trump who has lost domestic momentum may turn toward talks with North Korea.

Immigration is not a foreign subject for Korea. Last September, an immigration raid at the Hyundai-LG Energy Solution battery plant construction site in Georgia led to the detention of many Korean workers. Nothing confirms that Miller's appointment will immediately affect Korean firms' visa or investment procedures, and the Korean government's official reaction had not been confirmed at the time of writing.

Financial markets were already shaken. On November 6 the KOSPI plunged 6.02% to 5,059.69 and the won closed at 1,356.6 per dollar, down 14.5 won. Betanews reported that fears of tighter regulation of AI data centers after the midterms spread into a chip sell-off; no report confirms that the personnel change itself moved markets.

As a third perspective, China and Taiwan read the event differently. Global Times argued in a same-day editorial that Taiwan's authorities rushed to exploit gaps in the new Congress as soon as Democrats won, while China's foreign ministry, judging by the headline, said China and the US should move toward each other to keep economic and trade ties stable. In Taiwan, UDN headlined that President Lai received a briefing from economic agencies and the Executive Yuan authorized the National Stabilization Fund to enter the market; details were not confirmed. One Washington personnel decision is thus read by Seoul as trade and security, by Beijing as the Taiwan issue, and by Taipei as market stability.

Three things to watch: how White House scheduling and congressional strategy change after Miller takes office on the 9th, whether further cabinet changes follow, and how the new Congress opens its immigration-policy investigations in January. Experts say Seoul and Korean firms should widen contacts with both Congress and the White House on trade, immigration and nonproliferation.