Policy theory suggests that coherent statutes – those with precise, clear goals, supported by an adequate causal theory, with clear administrative responsibilities, clear implementation rules, and assigned to committed agencies – are more likely to have their intended impact. Using the Mazmanian and Sabatier policy implementation framework, this article examines U.S. family planning policies with a pooled time series analysis from 1982 to 1988. Of the four family planning statutes, only Title X, the categorical grant program, meets the criteria of a coherent statute. The data analysis reveals that a dollar spent through Title X has a much greater impact on birth rates, abortion rates, late prenatal care, and infant and neonatal mortality than does a dollar spent through other programs. The results are strong evidence in support of designing policies with coherent statutes.