Rumored to carry a gun with him at all times, the colorful Field was the only sitting justice ever arrested—and the charge was murder. He was innocent, but nonetheless guilty of serious ethical violations in the Southern Pacific cases, at least by modern standards: A confidant of Leland Stanford, Field had advised the company on which lawyers to hire for this very series of cases and thus should have recused himself from them. He refused to—and, worse, while the first case was pending, covertly shared internal memoranda of the justices with Southern Pacific’s legal team.

The rules of judicial ethics were not well developed in the Gilded Age, however, and the self-assured Field, who feared the forces of socialism, did not hesitate to weigh in. Taxing the property of railroads differently, he said, was like allowing deductions for property “owned by white men or by old men, and not deducted if owned by black men or young men.”

So, with Field on the Court, still more twists were yet to come. The Supreme Court’s opinions are officially published in volumes edited by an administrator called the reporter of decisions. By tradition, the reporter writes up a summary of the Court’s opinion and includes it at the beginning of the opinion. The reporter in the 1880s was J. C. Bancroft Davis, whose wildly inaccurate summary of the Southern Pacific case said that the Court had ruled that “corporations are persons within … the Fourteenth Amendment.” Whether his summary was an error or something more nefarious—Davis had once been the president of the Newburgh and New York Railway company—will likely never be known.

Field nonetheless saw Davis’s erroneous summary as an opportunity. A few years later, in an opinion in an unrelated case, Field wrote that “corporations are persons within the meaning” of the Fourteenth Amendment. “It was so held in Santa Clara County v. Southern Pacific Railroad,” explained Field, who knew very well that the Court had done no such thing.

His gambit worked. In the following years, the case would be cited over and over by courts across the nation, including the Supreme Court, for deciding that corporations had rights under the Fourteenth Amendment.

Indeed, the faux precedent in the Southern Pacific case would go on to be used by a Supreme Court that in the early 20th century became famous for striking down numerous economic regulations, including federal child-labor laws, zoning laws, and wage-and-hour laws. Meanwhile, in cases like the notorious Plessy v. Ferguson (1896), those same justices refused to read the Constitution as protecting the rights of African Americans, the real intended beneficiaries of the Fourteenth Amendment. Between 1868, when the amendment was ratified, and 1912, the Supreme Court would rule on 28 cases involving the rights of African Americans and an astonishing 312 cases on the rights of corporations.

The day back in 1882 when the Supreme Court first heard Roscoe Conkling’s argument, the New-York Daily Tribune featured a story on the case with a headline that would turn out to be prophetic: “Civil Rights of Corporations.” Indeed, in a feat of deceitful legal alchemy, Southern Pacific and its wily legal team had, with the help of an audacious Supreme Court justice, set up the Fourteenth Amendment to be more of a bulwark for the rights of businesses than the rights of minorities.