The Papal States were a theocracy in which the Catholic Church and Catholics had more rights than members of other religions. Pius IX’s policies changed over time: At the beginning of his pontificate, together with other liberal measures, Pius opened the Jewish ghetto in Rome. After returning from exile in 1850, during which the Roman Republic issued sharp anti-Church measures,^[34] the Pope issued a series of anti-liberal measures, including re-instituting the Ghetto.^[35]

In 1858, in a highly publicized case, the police of the Papal States took a 6-year-old Jewish boy, Edgardo Mortara, from his parents. A Christian servant girl of the family, fearing he would die, had reportedly baptized him while he was ill. The law did not permit Christians to be raised by Jews, even their own parents. Pius raised the boy in thepapal household and the boy later was ordained a priest.