Mission Presbytery, in San Antonio, TX, had accepted a woman as a candidate for ministry even though she told the presbytery she was a lesbian in a committed relationship. The presbytery declared that the well-known rule barring practicing homosexuals from the ordained ministry did not apply to candidates for ministry, and voted to accept her as a candidate, 169 - 111. On appeal, the Permanent Judicial Commission of the Presbyterian Church (USA) General Assembly, the church's top court, ruled that a practicing lesbian can't be a candidate for ordination, for the same reason that she can't eventually be ordained.
This is another case of those who disagree with the church's rule playing brinksmanship to see what they can get away with. It does not matter what the rule is, this is the wrong way to change the church.