Louisiana is unique in that its legislation is based primarily on Roman civil law instead of English common law; as such, attorneys who wish to practice in Louisiana must sit for its unique bar exam. In addition, while much of the Southern United States is heavily Protestant, Louisiana (especially in the southern half of the state) is overwhelmingly Roman Catholic. | Louisiana is unique in that its legislation is based primarily on Roman civil law instead of English common law; as such, attorneys who wish to practice in Louisiana must sit for its unique bar exam. In addition, while much of the Southern United States is heavily Protestant, Louisiana (especially in the southern half of the state) is overwhelmingly Roman Catholic. |