Before either Brett Kavanaugh or Ketanji Brown Jackson was a president’s final choice for the U.S. Supreme Court, Kavanaugh reviewed appeals of Jackson’s decisions and led reversals of two of her opinions.

When he sat on the U.S. Court of Appeals for the D.C. Circuit, Kavanaugh wrote two of the 12 opinions reversing in whole or in part decisions written by Jackson. But four years later, as a justice, Kavanaugh joined a unanimous decision that vindicated her ruling in a different decision that had been reversed by the D.C. Circuit—Guam v. United States, a victory for Guam.