In a change to Church law, Latin-rite Catholic deacons may not preside at a wedding when one or both of the new spouses are members of an Eastern Catholic church.

The new rule is one of the changes to 11 canons in the Latin-rite Code of Canon Law that Pope Francis approved in order to harmonise the laws of the Latin and Eastern Catholic churches on several issues involving the sacraments of baptism and marriage.

After more than 15 years of study and worldwide consultation, the conflicting rules were resolved by adopting the Eastern code's formulations for the Latin church as well, said Bishop Juan Ignacio Arrieta, secretary of the Pontifical Council for Legislative Texts.