Fifteen states sue Trump administration over unscientific, unauthorized changes to childhood vaccine rules.

Fifteen states, including Colorado, California, and New York, have sued the Trump administration over proposed changes to childhood vaccine recommendations, claiming that the changes lack scientific support, bypass proper public review, and may reduce immunization rates. The states argue that the changes violate federal law and endanger public health by weakening vaccine mandates in schools and childcare. The lawsuit questions the administration's authority to change long-standing policies without proper justification. The case, which is expected to be heard in federal court, has the potential to shape future vaccine policy as well as the balance of power between state and federal governments in public health.