Post-midterm Republican losses in both chambers of Congress triggered an immediate wave of senior departures and staff transitions in the Trump administration, including White House Chief of Staff Susie Wiles’s exit and replacement by Stephen Miller in early November 2026, alongside multiple Justice Department resignations such as those of Harmeet Dhillon and Brett Shumate. These developments, combined with Trump’s public comments on limited cabinet adjustments and reported internal discussions over Commerce Secretary Howard Lutnick amid export-control controversies, have shaped trader assessments of near-term exit probabilities through December 31, 2026. Earlier 2026 turnover among cabinet-level officials further contextualizes the current environment of elevated scrutiny and procedural changes under the new chief of staff.