The question of whether foreign corporations doing business in the United States can be sued here for crimes committed elsewhere has arrayed international businesses against human rights advocates, with many “friend of the court” briefs filed on both sides. Four governments have also chimed in: Britain, the Netherlands and Germany for the corporate defendant and the United States on the side of the Nigerian plaintiffs.

The story behind the Kiobel case is compelling: The plaintiffs are members of the Ogoni people in Nigeria’s Niger Delta, where Royal Dutch Shell had extensive oil operations in the 1990s through contracts with the brutal military dictatorship that held power at the time. The region is widely considered a zone of calamity, in terms of both environmental and human rights. In the suit, Royal Dutch Shell was accused of assisting the Nigerian government in torturing and, through sham trials, executing Ogoni activists who had threatened to disrupt Shell’s operations because of the devastating health and environmental effects of unregulated drilling practices. The plaintiffs are either victims of torture themselves or had relatives who were executed. Esther Kiobel, the plaintiff after whom the suit is named, is the widow of a victim.

If the Supreme Court rules in favor of Royal Dutch Shell and against the plaintiffs, multinational corporations — particularly in mining and other extractive industries — could draw the lesson that it is now safer to forge alliances with autocratic regimes that have poor human rights records because they will not be judged culpable in the way individuals can be.

In fact, many “friend of the court” briefs filed by corporations in this case contend that the companies are committed to voluntarily complying with human rights norms — but that standards set by the United Nations and other public and private organizations are mere guidelines that are not enforceable as legal norms. What they are really saying is that there are legal norms against torture and such, but that they can’t be enforced against corporations because they have never been enforced under international law — a claim the plaintiffs strongly contest.

This leaves the Supreme Court with an extraordinary choice to make, in juxtaposition to its previous ruling in Citizens United: whether to accept an argument that, in effect, leaves corporations less culpable than individuals are for human rights violations committed abroad — or whether to hold that if a 200-year-old law can be used to hold individual violators to account, it can be used against corporate violators as well.

A decision affirming that Shell should go unpunished in the Niger Delta case would leave us with a Supreme Court that seems of two minds: in the words of Justice John Paul Stevens’s dissent from Citizens United, it threatens “to undermine the integrity of elected institutions across the nation” by treating corporations as people to let them make unlimited political contributions, even as it treats corporations as if they are not people to immunize them from prosecution for the most grievous human rights violations.

A more startling paradox is difficult to imagine.