Rawlinson, Andrew 2001. "Western Buddhist Teachers", Journal of Global Buddhism, Vol 2
on page 130 it says:
In 1991, Ajahn Sumedho was
asked to be the upajjhaaya or preceptor in charge of the
ordinations — seven men and forty-five women, all of them
Eastern apart from one American man — at Hsüan Hua's
centre in California because Hsüan Hua himself was too ill.
Does anyone know any more about this interesting topic?
The article is available at http://www.globalbuddhism.org