Chief Justice Roberts has no respect for precedent that doesn’t suit his purposes.

One of the less noticed parts of last week’s Citizens United decision by the Supreme Court overturning precedent that had supported over 100 years of congressional restrictions on corporate campaign contributions was precisely the question of the strength of precedent. During his confirmation hearings, prospective Chief Justice Roberts was questioned intensely on the question of his respect for precedent, particularly with respect to Roe v. Wade. In keeping with the image he plainly intended to project of a true conservative, a non-activist who respects existing institutions, Roberts emphasized his respect for precedent.

Thus, it should not be particularly surprising that Roberts wrote a separate concurring opinion in Citizen’s United to supplement his support of Justice Kennedy’s majority opinion. Roberts’ concurrence focused on the need to follow Court precedent — or, rather, the need to depart from precedent in this particular case.

Roberts’ concurrence should leave people convinced he would overturn Roe v. Wade and that his persona as a non-activist “umpire” who merely calls balls and strikes is a fraud. First, Roberts wrote, upholding precedent “is not an end in itself. It is instead ‘the means by which we ensure that the law will not merelychange erratically, but will develop in a principled and intelligible fashion.’”

So why would Roberts depart from precedent? First, if he thinks it’s wrong: “[I]f the precedent under consideration itself departed from the Court’s jurisprudence, returning to the ‘ “intrinsically sounder” doctrine established in priorcases’ may ‘better serv[e] the values of stare decisis than would following [the] more recently decided case inconsistent with the decisions that came before it.’”

Merely overturning precedent because a judge thinks it’s wrong, of course, does away entirely with what court’s call “stare decisis,” the rule that compels them to follow precedent (except when they don’t). If all that mattered was a judge’s determination of what is right, then there would be no need for stare decisis — a judge will always uphold precedent he or she believes is right.

So Roberts has to come up with something better. What does he come up with? To me it’s plain: precedent ought to be overturned if its justification is difficult, if using it to decide future cases is difficult, and if its original justification is open to question:

[I]f adherence to a precedent actually impedes the stable and orderly adjudication of future cases, its stare decisis effect is also diminished. This can happen in a number of circumstances, such as when the precedent’s validity is so hotly contested that it cannot reliably function as a basis for decision in future cases, when its rationale threatens to upend our settled jurisprudence inrelated areas of law, and when the precedent’s underlying reasoning has become so discredited that the Court cannot keep the precedent alive without jury-rigging new anddifferent justifications to shore up the original mistake.

Justice Blackmun’s opinion in Roe v. Wade has been under attack by both supporters of the right to choose whether or not to carry a pregnancy to term and those who oppose the right to choose since the day it was issued in 1973. And in fact, our courts should and do uphold precedent if there is any legitimate justification to uphold — that’s a central truth about legal interpretation (and one law students have a very difficult time gaining an understanding of). But Justice Roberts and his allies on the Court now have authority to cite as support for overturning Roe v. Wade because its original justification may not gain widespread support — this opinion of in Citizen’s United.

Finally, Roe v. Wade fits that other justification Roberts advances for overturning precedent —  it is “hotly contested,” and no doubt he and his allies would argue it therefore “cannot reliably function as a basis for decision in future cases.”

One thing I do know — Roberts has no respect for precedent that doesn’t suit his purposes.