“I’m personally opposed to slavery, but I don’t want to force my opinion on people who support the right to own slaves.”

This statement probably sounds ridiculous to most people, but it was, more or less, the position of Stephen Douglas, the Democratic candidate for president in 1860. Douglas is famous for his failed attempt to address slavery through “popular sovereignty,” the policy that each state should be allowed to determine for itself whether or not it would allow slavery. Does his position sound familiar? Maybe not? Alright, how about this:

“I’m personally opposed to abortion, but I don’t want to force my opinion on people who support the right to have abortions.”

This statement probably doesn’t sound ridiculous to many people because it is, more or less, their own position. I want to suggest, however, that this statement may not be so different from Stephen Douglas’s. Both slavery and abortion are profound moral issues that cut to the very heart of what it means to be human. There were many good reasons in 1860 to vote for Stephen Douglas (who didn’t oppose the extension of slavery, as Abraham Lincoln did). There was one big reason not to. In 2008, there are many good reasons to vote for candidates who support the right to abortion. The question is, is there one big reason not to?

In November, 2007, the United States Conference of Catholic Bishops (USCCB, the Catholic Church in the US) released its quadrennial voter guide for Catholics, Forming Consciences for Faithful Citizenship. In 2004, several US Catholic bishops had caused a stir by declaring that they would refuse communion to John Kerry, a Catholic and the Democratic presidential nominee, because of his support for abortion. In Faithful Citizenship the USCCB extended the bishops’ opinion by declaring that any Catholic who voted for a pro-choice candidate “would be guilty of formal cooperation in grave evil,” (p. 15) in a way that Catholics who voted for, say, a pro-war or an anti-immigration candidate probably would not.

Many Catholics immediately protested. Joe Feuerherd, a former Washington correspondent for the National Catholic Reporter magazine, wrote an op-ed in the Washington Post accusing the Bishops of partisanship and of distorting Catholic Social Teaching. “To Catholics like me,” Feuerherd said, “who oppose liberal abortion laws but also think that other issues — war or peace, health care, just wages, immigration, affordable housing, torture — actually matter, the idea that abortion trumps everything, all the time, no matter what, is both bad religion and bad civics.” Feuerherd’s list includes some pretty important Christian duties: treating the sick, protecting the alien, sheltering the homeless, and freeing the oppressed. Why, he asks, should Christians allow one moral duty to trump a host of others?

To answer that question, though, a person first needs to ask himself two others: What is abortion? and Are there any reasons to oppose it? The two questions are intertwined. Perhaps it will help if we first apply them to the slavery debate, circa 1860.

Contrary to popular conception, the US in 1860 wasn’t divided between Southern people committed to slavery and Northern people committed to freedom. While few whites (in the North or the South) considered blacks their equals, many of them were still vaguely uneasy with slavery. Eventually, despite slavery advocates’ best efforts, most people came to view blacks as fully human. Consequently, they also came to view slavery as the deliberate withholding of freedom from a human being, and, therefore, as evil. Despite all the other legitimate issues at stake in 1860, a large number of people came to believe that none of them justified allowing slavery to expand.

The best way for a person trying to answer Joe Feuerherd’s question in 2008 to proceed is first to ask what abortion is and only then to ask what, if any, reasons exist to oppose it. Most Americans, though, have got it backwards. They generally haven’t settled what abortion is, but most of them still oppose it at various stages. Consequently, they tend to feel very uneasy about it. But what is this thing that they feel so uneasy about?

For over 1,900 years the Christian Church has declared abortion to be the deliberate killing of an innocent human life — in effect, murder. This is a serious accusation, and countless ethicists and medical experts have disputed it over the past several decades. It also provides the only reasonable basis, so far as I can see, for opposing abortion. It forces us to see the issue more clearly, by making us ask: Is abortion the deliberate killing of an innocent human life? If it’s not, why should anyone feel uneasy about it, anymore than anyone should feel morally conflicted about removing his appendix? If it is, why should anyone not oppose it? What other issues justify supporting the deliberate killing of innocent human lives?

Today, as in 1860, most of us disagree with the major candidates on some very important issues, and when we vote we must therefore choose between issues of relative importance. 158 years ago, millions of Christians believed that other important issues justified their voting for Stephen Douglas, the pro-choice (”popular sovereignty”) candidate — in effect, saying, “To Christians like me who oppose slavery laws but also think that other issues — war or peace, states’ rights, homesteaders’ rights, immigration — actually matter, the idea that slavery trumps everything, all the time, no matter what, is both bad religion and bad civics.” For people who are uncomfortable with abortion, yet are considering voting for a pro-choice candidate, the important question is: Would you vote for Stephen Douglas?