The first amendment to the US Constitution says that people have freedom of religion and that the government shall not establish any particular religion. To some this entails an absolute separation of church and state, but some have taken this to mean that people can be exempt from certain laws on religious grounds. The Supreme Court recently used this line of reasoning to exempt certain corporations from the health care contraceptives coverage mandate. There are many similar related questions as well, such as whether cities can hold public prayers for a specific religion, whether the Ten Commandments and/or crosses can be displayed on public property, and whether the word "God" should be in the pledge of allegiance recited by school children. There is much to talk about here.