Catholic Online reports that Bishop William Skylstad called the move is an "affront to people committed to human rights". He also said that "God is bigger than Amnesty International".
Amnesty was previously neutral on abortion, but this month officially adopted a stance the favours abortion in certain circumstances.
A statement from the US Bishops' Conference said promoting access to abortion services undermines Amnesty's moral credibility, and divides the global work to protect human life and human dignity.
Bishop Skylestad said true commitment to women's rights puts does not pit one against their unborn children, but "calls us to advocate on behalf of both".
'God is bigger than Amnesty Int'l' â€“ U.S. bishops decry decision to promote abortion (Catholic Online, 26/8/07)
LINKS (not necessarily endorsed by Church Resources)
Amnesty International (Wikipedia)
US Conference of Catholic Bishops
Sydney Catholic College quits Amnesty (CathNews, 21/9/07)
Bishop resigns as Amnesty backs abortion (CathNews, 20/8/07)
Amnesty refuses to budge on abortion (CathNews, 31/7/07)
US bishops pressure Amnesty over abortion (CathNews, 5/7/07)
Vatican, Amnesty in abortion stoush (CathNews, 14/6/07)
Bishops to respond to Amnesty abortion policy (CathNews, 28/5/07)