HHS Overhaul Under Trump Faces Legal Hurdles and Leadership Shakeups
Robert F. Kennedy Jr.'s HHS leadership overhaul sees mixed success amid lawsuits and staff changes.
Why it matters: Legal teams in health and regulatory sectors must watch federal health leadership stability, as ongoing challenges could affect policy enforcement and compliance.
- Robert F. Kennedy Jr. sworn in as HHS Secretary on Feb 13, 2025, initiating MAHA agenda.
- HHS reduced routine childhood vaccines from 17 to 11 in Jan 2026, sparking multistate lawsuits.
- Federal judge blocked the vaccine policy changes on Mar 16, 2026, citing flawed process.
- Significant leadership changes include appointment of Chris Klomp as Chief Counselor and exit of key deputies in early 2026.
Robert F. Kennedy Jr. took office as the 26th Secretary of Health and Human Services (HHS) on February 13, 2025, under President Trump. He immediately pushed the Make America Healthy Again (MAHA) agenda, asserting, "We are restoring accountability, challenging entrenched interests, and putting the health of the American people first." (HHS official announcement)
In January 2026, HHS controversially cut the routinely recommended childhood vaccines from 17 to 11, moving several vaccines—including rotavirus and COVID-19—to a "shared clinical decision-making" category. This change triggered legal opposition, with Colorado Attorney General Phil Weiser joining a multistate lawsuit challenging the policy overhaul. (KFF analysis) (Colorado AG statement)
On March 16, 2026, a federal judge blocked the implementation of Kennedy’s vaccine changes, citing the government’s failure to properly involve independent experts in setting public health policy. This marked a significant legal setback. (Washington Post report) The Department of Justice appealed the ruling on April 29, 2026, signaling ongoing judicial battles. (Stat News coverage)
The leadership shuffle within HHS has been notable. In February 2026, Deputy Secretary Jim O’Neill and General Counsel Mike Stuart left the department amid restructuring. Kennedy added Chris Klomp as Chief Counselor, overseeing all operations, and Casey Mulligan was appointed Chief Economist and Chief Regulatory Officer in April to address health care affordability. (Stat News) (HHS team enhancements) (Axios report)
Adding to the leadership dynamics, President Trump nominated Erica Schwartz as CDC Director in April, with Senate health committee confirmation in July via a close 12-10 vote. Meanwhile, Dr. Heidi Overton emerged as a key advisor driving the MAHA agenda within the White House Domestic Policy Council. (Axios) (The Atlantic)
These developments reflect partial successes but ongoing challenges for the Trump administration's HHS leadership overhaul, producing significant legal uncertainties and reshaping federal health policy enforcement.
By the numbers:
- 6 vaccines moved to shared clinical decision-making — part of January 2026 immunization overhaul
- 12-10 Senate health committee vote — on Erica Schwartz's CDC Director confirmation on July 30, 2026
- 3 key leadership departures or appointments — Inc. exit of Deputy Secretary and General Counsel and appointment of Chief Counselor by Feb 2026
Yes, but: While the administration is advancing its priorities, judicial pushback and lawsuits slow HHS policy changes, highlighting instability.
What's next: The Department of Justice’s appeal outcome will critically shape the future of vaccine policy under the MAHA agenda.