America has been embroiled in a seemingly endless debate over the issue of abortion for four decades now, but the most fascinating dispute on this issue may now be among those who consider themselves, in one way or another, advocates of abortion rights.

An unprecedented view into this debate is available on the pages of Slate.com--a prominent Web site that features some of the liveliest reporting available anywhere today. Nevertheless, this exchange between writers William Saletan and Katha Pollitt did not begin on the Internet, but in the pages of The New York Times and The Nation.

Saletan fired the first salvo, suggesting in an op/ed commentary published in The New York Times that pro-choicers should admit that abortion is "bad" and that those who support abortion rights should work toward a truly dramatic reduction in the total number of abortions.

Saletan's argument is not exactly new, either for himself or for the movement he supports. In his 2004 book, Bearing Right: How Conservatives Won the Abortion War, Saletan offered some of the most incisive and perceptive analysis of the national abortion debate. In essence, Saletan argued that America has settled on a fragile consensus he described as "conservative pro-choice." Americans are quite squeamish about abortion itself, but have resisted efforts to eliminate access to abortion altogether.

Even those who disagree with Saletan must take his argument seriously. Those of us who yearn to see America affirm the sanctity of all human life, born and preborn, must acknowledge that we have much work to do in terms of changing public opinion--the task of reaching the hearts and minds of millions of individual citizens.

That process of reaching hearts and minds is Saletan's concern as well, even as he is a strong defender of abortion rights. As he sees it, support for abortion rights is diminishing as the pro-life movement has been largely successful in focusing upon the moral status of the fetus and the objectionable--even horrible--nature of abortion itself.

Writing on the thirty-third anniversary of Roe v. Wade, Saletan boldly argued: "It's time for the abortion-rights movement to declare war on abortion."

That was a rather amazing statement, and Saletan clearly intended to catch the attention of abortion-rights advocates.

"If you support abortion rights, this idea may strike you as nuts," Saletan acknowledged. "But look at your predicament. Most Americans support Roe and think women, not the government, should make abortion decisions. Yet they've entrusted Congress and the White House to politicians who oppose legal abortion, and they haven't stopped the confirmations to the Supreme Court of John G. Roberts Jr. and . . . Samuel A. Alito Jr."

In terms of political analysis, Saletan reminded his pro-choice readers that abortion may have been a "winning issue" for their side sixteen years ago, but no more. "You have a problem," he advised.