[dangus]

Actually, to FAIL to require conversion before marriage is grounds for annulment. I'm not sure about religions which are close to Catholicism (Orthodox), but if you're married to someone who is not in communion with the church, that person cannot even receive Eucharist at the wedding mass. And how can one half of a union be in communion and the other half not?

[Catholicguy]

Canon Law says otherwise in Canons 1124 - 1129

[sinkspur]

Actually, to FAIL to require conversion before marriage is grounds for annulment.

Uh, no. Dispensations are given to marry non-Catholics with regularity; there is no requirement that a non-Catholic convert before or after the ceremony. None.