President Donald Trump signed an executive order Monday urging states to scale back school immunization requirements and directing the Attorney General to pursue litigation against states that fail to provide religious and medical exemptions.
The order declares a set of “Gold Standard Childhood Vaccine Recommendations” that would reduce the list of diseases against which all children are advised to be immunized from 18 to 11, sorting the remainder into shots recommended only for high-risk groups and shots left to “shared clinical decision-making” between parents and clinicians. It also recommends splitting the combined measles, mumps and rubella vaccine into three single-disease shots “once such products are domestically available,” and administering all childhood immunizations at separate medical visits.
The recommendations are advisory. States, not the federal government, set immunization requirements for school entry, and the order only “advises” states and territories to consider updating their laws. Its operative legal directives run elsewhere: Section 4 instructs the attorney general to “further meritorious legal actions” challenging state laws that conflict with obligations on parental authority, religious freedom, disability accommodations and equal protection, and directs the Departments of Justice, Education and Health to ensure their contractors and grantees, including states and localities, comply. The order states that it creates no rights enforceable against the government.
Section 3 gives HHS 90 days, acting through its Task Force on Safer Childhood Vaccines, to submit plans on single-antigen vaccines, dose timing and sequencing, alternatives to aluminum adjuvants, and safety monitoring.
The order itself acknowledges that earlier directives have been “delayed due to litigation” over the composition of the Advisory Committee on Immunization Practices, the federal panel whose recommendations several statutes tie to insurance coverage and public vaccine funding. In a suit brought by the American Academy of Pediatrics and other medical groups, the US District Court for the District of Massachusetts on March 16 stayed the January 2026 immunization schedule and the appointments of 13 committee members named by Health Secretary Robert F. Kennedy Jr., finding the schedule change likely arbitrary and contrary to law under the Administrative Procedure Act, the statute governing federal agency action. The government appealed the following month.
Trump repeatedly linked childhood vaccines to autism in his Oval Office remarks; the order does not mention autism, and decades of research have found no such link—a point about which critics have been outspoken.
Sen. Bill Cassidy, a Republican physician, slammed the move on X:
I’m a doctor. This executive order is wrong. The President does not have the expertise to make these changes. Vaccines are overwhelmingly safe. Vaccines are effective. Vaccines DO NOT cause autism. Breaking up vaccines will mean children have to get more shots to get the same protection, not fewer shots. It will increase hesitancy and make children less safe. Parents should listen to their child’s pediatrician about vaccines rather than listening to an inaccurate executive order. This is so wrong.
Infectious disease doctor and Stanford Medical School Professor Jake Scott also took to X, warning that single-dose vaccines have a lower likelihood of completion:
Trump just signed an executive order on childhood vaccines: separate visits for every shot, MMR split into three vaccines that don’t exist, hepatitis B and others kept out of routine recommendation, and a nudge to states to revisit school requirements. There is no new evidence behind any of it. Just an old theory that keeps getting resurrected… The monovalent vaccines were discontinued in 2009, recreating them would take years of new trials, and children who get combination vaccines are far more likely to complete the series.
Federal data show 2,465 confirmed measles cases as of Aug. 6, already exceeding the 2,289 reported in all of 2025 and the most since 1991. The disease was declared to have been eliminated in the US in 2000; a federal panel is set to review this month whether the US retains that status. Among diseases the order removes from the universal list, CDC recorded 191 influenza deaths in children during the 2025–26 season, about 85% of them in children not fully vaccinated, and 463 confirmed and probable meningococcal cases in 2025, the second-highest count since 2013. Kindergarten vaccination coverage has fallen below the 95% federal target for five consecutive years, and vaccine exemptions reached a record 3.6% in the 2024–25 school year, nearly all of them nonmedical.
