Why is the Latin Catholic clergy restricted in this way and not the Greek Catholic? They are both Catholic under the Pope, so why?
If an Irish Catholic man wanted to join the preisthood but he wanted to be wed first he would not be allowed to join, but if he was a Ukranian Greek Catholic he would be ordained a preist and he could father children legaly with full approval of the Catholic Church.
Again I ask why?
I don't know where you are getting your information, but it is not correct. Traditional Catholics do not have a "hard time" dealing with this, in fact it is not even an issue with them. Those who are liberalized, and represent the Protestantized American Catholic Church, which is a pale and sad copy of the Roman Catholic Church, represent the group who are calling for women in the priesthood, acceptance of gay priests and married priests.
If an Irish Catholic man wanted to join the preisthood but he wanted to be wed first he would not be allowed to join, but if he was a Ukranian Greek Catholic he would be ordained a preist and he could father children legaly with full approval of the Catholic Church.
I would suggest your Irish Catholic man go directly to a seminary under the jurisdication of the Ukranian Greek sect in order to become a priest and if he wants to get married before entering the priesthood, he should convert to some other religion.