I am a monk in the Taego Order. I actually did my bhikshu ordination at a Vietnamese temple before staying in S. Korea and Nepal over a two year period (the abbot was my classmate in grad school and offered to arrange the ordination for me prior to going overseas), so I have a vow of celibacy. I joined the Taego Order a little over a year ago.
Clergy ordained within the Taego Order ordain with the understanding that celibacy is an option, at least for men. Therefore, there is no breaking of vows. Other than the vow of celibacy, the rules for our clergy are the same as in the Jogye Order (the Caturvagga Vinaya, also called the Dharmaguptaka Vinaya). As for discrimination, all Asian Buddhist orders discriminate. The full ordination for women died in the Theravada tradition centuries ago and was never transmitted to Tibet. In Japan, where the Vinaya is no longer extant at all, while nuns do not have a formal vow of celibacy, they are culturally expected to remain celibate while priests are expected to marry to produce sons who will in turn ordain. Throughout Asia, nuns are treated as less than the monks. In S. Korea, however, monks and nuns have separate temples and training facilities, so on a day to day basis, one wouldn't notice any difference.
I know of no Asian Buddhist order that will allow homosexuals to ordain, even with a vow of celibacy. Someone said in this thread that the rule against the ordination of homosexuals was Bishop Jongmae Park's rule. That is incorrect. It is a pan-Asian rule. I have spoken about this with monastics from the Theravada tradition, Vietnamese tradition, and others and have yet to find an order that will allow it. Actually, I've known some American homosexuals ordained in the Tibetan tradition, but from what I'm told what is actually taught in the Tibetan monasteries is quite homophobic. Personally, I think Tibetans will ordain gays and lesbians because they know our culture is more liberal and they depend upon us for material support. Other Buddhist traditions are not dependent upon us and so they don't have to accommodate our cultural expectations on these issues.
There is a story in the Vinaya of a man who asks the Buddha for ordination, but some bhikshus tell the Buddha that this man approaches them, lifts up his skirt-like garment, bends over and says, "Hey, monks, come have your way with me." The Buddha then says such men cannot be ordained. The reason for denying such a man ordination is because his motivation for ordination is improper (to have sexual access to other monks) and because of the disruption such a man would cause in the community. Personally, I know that this does not describe all gay men, but it appears to be the primary basis throughout the Buddhist world for denying homosexuals ordination. In East Asia, Confucianism also plays a major role in attitudes toward homosexuals and has deeply influenced Buddhism. It must be noted that the Taego Order is not a Western Buddhist order. It is still very much as Asian Buddhist order just getting started in the West.
The rule against those with disabilities from ordaining comes from the Vinaya as well. The Buddha didn't want people to use the order as a source of material support. The rule against those aged 55 and older (it's 50 in Korea) is an extension of this rule and is also found in the Jogye order. Both orders don't want people to use the sangha as their retirement plan. This has in fact become a problem in Laos, for example, where there is no age restriction. The temples are now top heavy with elderly men who are too old to do the physical work needed, let alone all the training and education in Dharma so it can be passed on to later generations. This has put a heavy burden on younger monks.
So, if anyone is going to point a finger at the Taego Order for this discrimination, that exact same finger must be pointed at every other Asian Buddhist order as well. None of this is unique to the Taego Order.
Finally, I would like to point out that there is a fully inclusive ordination option through the Mook Rim (pronounced "Moong Neem") Society founded by Bishop Jongmae Park and some of his Jogye colleagues. People not eligible to ordain in the Taego Order can still study in the Taego seminary for this ordination option and then participate in all the training available in the Overseas Parish of the Taego Order.
One more thing: The Jogye Order has allowed it's military chaplains to ordain and then marry since the 1970's. This is why Bishop Park was a married member of the Jogye Order. He switched to the Taego Order so that his disciples could ordain. Once again, I've seen people writing about the Taego Order, making assumptions, and not checking the facts. I hope this clears things up.
While I would personally love it if the entire Buddhist world was as inclusive as we'd like it to be in America and elsewhere in the West, I recognize that things will take time. We Western Taego clergy are the newbies who have not yet earned a place at the table, but as more Westerners ordain and as time goes on, it is my hope that our influence throughout the Buddhist world will grow. Someone also mentioned in this thread that discrimination like this has not place in Western Buddhism. This isn't Western Buddhism, though. It's still very much Asian Buddhism. Change will take time.
For a statement on these issues (of which I am the primary author), please see the "Seminary" page on http://www.taegozen.net
. Finally, I would respectfully request that before anyone goes off on the Taego Order again, to please write us directly and ask questions. I am always happy to answer any questions or clear up any confusion if I am able to do so.