Home of the Inter-American Court of Human Rights (IACHR), Costa Rica is the only country in the whole American Continent with a recognized official state religion (Roman Catholic), which has manifested its influence over public life on a number of issues, for example in keeping Costa Rica's ban of In - Vitro Fertilization (IVF) in place until 2016. (blog.politics.ox.ac.uk)
Beginning with the Han dynasty in 141 bc, it was promulgated as the official state religion. (firstthings.com)
The only thing it actually means, is that their is no official state religion. (religion.blogs.cnn.com)