John McLean was one of two dissenters in the
Dred Scott case. He sought the Republican nomination for President in 1860, losing to
Abraham Lincoln. However, he recommended to Lincoln on a number of occasions that Swayne be nominated to replace him on the court. This proved timely; McLean died in April 1861, shortly after Lincoln's inauguration. As the
American Civil War began, Swayne campaigned for the vacant seat, lobbying several Ohio members of Congress for their support. As the
Oyez Project notes: "Swayne satisfied Lincoln's criteria for appointment: commitment to the Union, slavery opponent, geographically correct." It is also believed that Swayne had represented fugitive slaves in court. So nine months after McLean's death, Swayne was nominated, on January 21, 1862. The nomination was confirmed by the
United States Senate on January 24, 1862, with Swayne receiving his commission the same day. Three days later, on January 27, he took the judicial oath, thereby becoming the
35th justice of the Supreme Court. His main distinction was his staunch judicial support of the president's war measures: the Union blockade (
Prize Cases, 67 U.S. 635 (1862)); issuance of
paper money (
i.e.,
greenbacks in the
Legal Tender Cases); and support for the presidential prerogative to declare
martial law (
Ex Parte Milligan, 71 U.S. 2 (1866)). He is most famous for his majority opinion in
Springer v. United States,
102 U.S. 586 (1881), which upheld the Federal
income tax imposed under the
Revenue Act of 1864. In
Gelpcke v. City of Dubuque, 68 U.S. 175 (1864), Swayne wrote the majority opinion, repudiating a claim that the Iowa constitution could impair legal obligations to bondholders. When contracts are made on the basis of trust in past judicial decisions those contracts could not be impaired by any subsequent construction of the law. "We shall never immolate truth, justice, and the law, because a state tribunal has erected the altar and decreed the sacrifice." According to Lurie, he strongly supported "the contractual rights of railroad bond holders, even in the face of repudiation sanctioned both by the
Iowa state legislature and state
supreme court. Obligations sacred to law are not to be destroyed simply because 'a state tribunal has erected the altar and decreed the sacrifice.'" For a later decision on impairment of contracts,
compare Lochner v. New York, 198 U.S. 45 (1905). Swayne remained on the court until 1881, twice lobbying unsuccessfully to be elevated to the position of chief justice (after the death of
Roger B. Taney in 1864 and Salmon Chase in 1873). After his retirement, Swayne returned to Ohio. ==Retirement, death and legacy==