This paper analyzes the accommodation of religion --governmental policies with a long-standing practice in United States constitutional law--, as well as the debates generated about the conformity of accommodation of religion with the two clauses on the First Amendment of the U.S. Constitution, the Establishmente Clause and the Free Exercise Clause. The paper analyzes also the main jurisprudence on accommodation of religion and the tests that have been constructed to judge this kind of policies, as the test Lemon and test Cutter. [ABSTRACT FROM AUTHOR]