Homosexual unions are also totally
lacking in the conjugal dimension, which represents the human and ordered form
of sexuality. Sexual relations are human when and insofar as they express and
promote the mutual assistance of the sexes in marriage and are open to the
transmission of new life.
As experience has shown, the absence of
sexual complementarity in these unions creates obstacles in the normal
development of children who would be placed in the care of such persons. They
would be deprived of the experience of either fatherhood or motherhood. Allowing
children to be adopted by persons living in such unions would actually mean
doing violence to these children, in the sense that their condition of
dependency would be used to place them in an environment that is not conducive
to their full human development. This is gravely immoral and in open
contradiction to the principle, recognized also in the United Nations Convention
on the Rights of the Child, that the best interests of the child, as the weaker
and more vulnerable party, are to be the paramount consideration in every case.
http://www.vatican.va/roman_curia/congregations/cfaith/documents/rc_con_cfaith_doc_20030731_homosexual-unions_en.html
http://www.vatican.va/roman_curia/congregations/cfaith/documents/rc_con_cfaith_doc_20030731_homosexual-unions_en.html
Or as Wikipedia says:
1992 – A Vatican commission, led by Joseph Ratzinger, establishes that it is necessary to limit rights of homosexual people and non-married couples.
http://en.wikipedia.org/wiki/July_23
Term highlighted for emphasis.