Having disassociated themselves from an oppressive government with a strong central religion, the Founding Fathers of the United States acknowledged the freedom to practice one’s religion when writing the nation’s constitution. Subsequent constitutional amendments further drew a line between the ecumenical and the secular. Detailed descriptions of Supreme Court cases on the topic offer readers a clearer understanding of the original intent behind separating church and state, as well as how interpretations of such matters have impacted U.S. legislation.