[2][3] During the Fascist regime, a letter issued by Guido Buffarini Guidi, undersecretary of the Interior, provided grounds to shut all Pentecostal congregations in Italy.
[4] After the fall of Fascism, it was still difficult for Pentecostals to practice their faith and religious freedom, due to legal and social obstacles.
Thus, several Pentecostal congregations sought a purely nominal affiliation with the Assemblies of God USA.
[6] According to CESNUR, a think tank, the ADI is the single largest Protestant denomination in Italy.
[2] The church is more numerous in the South, especially Campania, Apulia, Basilicata, Calabria and Sicily, where it has more than half of its congregations.