London ? The archbishop of Canterbury said Friday he will not reverse his decision to exclude a gay U.S. bishop from joining other bishops at a global Anglican gathering next year.

The Episcopal Church, the Anglican body in the U.S., caused an uproar in 2003 by consecrating the first openly gay bishop, V. Gene Robinson of New Hampshire.

Anglicans are now on the brink of schism, and attendance at next year’s assembly, called the Lambeth Conference, has become a focus of the tension. Theological conservatives and liberals have separately threatened to boycott the meeting because of who was and wasn’t invited.

The office of Archbishop Rowan Williams said he also had not changed his mind about refusing an invitation to Martyn Minns, a conservative U.S. priest who was consecrated as a bishop in the Anglican Church of Nigeria to minister to disaffected Episcopalians in the U.S.