President Donald Trump on Monday signed an executive order calling for revamped childhood vaccine recommendations that promote his long-held belief that childhood shots should be spaced out into separate medical visits. Mary Conlon/AP Student Well-Being & Movement What Will Scaled-Back Childhood Vaccine Recommendations Mean for Schools? Even as the order calls for revised vaccine recommendations, states, not the federal government, have the authority to require vaccinations for schoolchildren. Trump publicly prodded the health secretary for an update on autism research in a Cabinet meeting last month. Scientific consensus and decades of studies have firmly concluded there is no link between childhood vaccines and autism.