How do they propose to measure and regulate 'same-sex attraction' exactly?
By gazing into each person's soul...
I'm thinking it would be the same way that they regulate "human-animal-sex attraction."
To start, don't put up the poster of Lassie, or Mr. Ed's, crotch next to the Coors Girls in your room. If you are a guy, don't brag publicly about how much you want to drive the dirt road with Tom Cuise. Pretty simple rules.
same sex attraction is a temptation, not a sin.
Homosexuality, like the tendency toward alcoholism and heterosexual promiscuity, is partly inborn, partly developed by childhood/young adulthood experiences, and so is considered an innate disorder...
people with innate disorders are usually barred from entering the priesthood or religious life (in the middle ages, if you were born out of wedlock, you needed a papal dispensation on the recommendation of your bishop if you wanted to become a priest, the idea being you might be promiscuous like your parents)...ditto for alcoholism and drugs...a person who was deeply into the drug culture should not be allowed to be a priest, because it shows immaturity or psychological problems...
So if you are tempted into same sex attraction, or into lustfulness of your eyes, you are supposed to reject the thought and ask God for help in not dwelling on the thought or not acting on it.
And you are supposed to stay away from "near occassions of sin"...if you are heterosexual, it means no Hooters or strip clubs, if you are gay, it means not living with men in monasteries, the army, or the priesthood...
a good book about how overcoming such temptations leads to holiness is Michael O'Brien's new book Sophia House...
And one more thing: Since homosexuality is an innate disorder, those who do fall into sin are less "guilty" than if a person choses to do it...to commit a mortal (serious) sin, you need to know it is wrong and then do it anyway...
So a man "hiding" homosexuality and who stays away from temptation who nevertheless falls into sin is less "guilty"(since he has an innate tendency toward that sin) than one who chooses to follow the gay lifestyle: The sin is not the sex, but the chosing of a promiscuous lifestyle that opens you to sinful actions...
All of this is true not just for sexual sins, but for anger, greed, etc...
and pride, not sexual sin, is the highest sin...saying my ideas are right and God is wrong is the highest sin...
Penile plesmythography
It is not an issue of "regulation" by an outward effort but about self confession and the spiritual, psychological state in self revelation by those in the Priesthood.
While, yes, standards are being revised for admission to Seminaries, any applicant who would conceal a homosexual identity in the admissions and even later enrollment process (if that happened), would be by that process already admitting a problematic pscyhology in that act of concealment alone.
The standards are there and have been but have been abused and ignored and manipulated to include homosexuals (and homosexual activity) in the Priesthood in defiance of the Catholic Church and scriptural definition of what homosexuality is. I think that Pope Benedict has just righted the terrible confusion that was allowed under Pope John Paul, bless him -- but in this important area, he did not lead.