In a case from Texas, the group joined parents in objecting to the U.S. Food and Drug Administration’s authorization to administer coronavirus vaccines to children. In a case from New Jersey, Children’s Health Defense challenged a Rutgers University requirement, imposed in 2021, for most students to be vaccinated to attend courses on campus, though the school did not force faculty or staff to be vaccinated.

Children’s Health Defense has a lawsuit pending against a number of news organizations, among them The Associated Press, accusing them of violating antitrust laws by taking action to identify misinformation, including about COVID-19 and COVID-19 vaccines. Kennedy took leave from the group when he announced his run for president but is listed as one of its attorneys in the lawsuit.