Under Poppy, see here: http://www.commondreams.org/views03/0214-03.htm
and here: http://www.post-gazette.com/nation/20030216casualty0216p5.asp
Under Dubya, see here: http://milfuegos.blogspot.com/2006/10/human-cost-of-war-in-iraq-655000-dead.html
and here: http://www.pslweb.org/site/News2?page=NewsArticle&id=5841&news_iv_ctrl=1009
Under Clinton, see here: http://www.casi.org.uk/discuss/2000/msg00816.html
and here: http://www.seattleweekly.com/news/0223/nc-parrish.html
One of the most telling moment in the story of the U.S. imposed sanctions against Iraq (under the Clinton regime) occurred during a 1996 interview with Madeleine Albright, who was at that time Clinton's UN ambassador.
Albright was appearing on the CBS show, "60 Minutes," and the dialog went as follows:
Lesley Stahl on U.S. sanctions against Iraq: We have heard that a half million children have died. I mean, that's more children than died in Hiroshima. And, you know, is the price worth it?
Secretary of State Madeleine Albright: I think this is a very hard choice, but the price--we think the price is worth it.
--60 Minutes (5/12/96)