Lincoln also presided over the passage of important domestic legislation, including the first of the Homestead Acts, the Morrill Land-Grant Act of 1862, and the Pacific Railroad Act of 1862. He ran for re-election in 1864 on the National Union ticket, which was supported by War Democrats in addition to Republicans. Though Lincoln feared he might lose the contest, he defeated his former subordinate, General George B. McClellan of the Democratic Party, in a landslide. The second effort was a 'never-never' constitutional amendment on slavery, that would shield domestic institutions of the states from Congressional interference and from future constitutional amendments. Commonly known as the Corwin Amendment, the measure was approved by Congress and sent to the state legislatures for ratification.