In 1867, Congress passed an act letting Nebraska join the Union(United States), provided that the Nebraska goverment removed the law that proposed state constitution that limited the right to vote to white males. President Andrew Johnson, convinced that the imposition of this condition on the state constitution was a violation of the U.S. Constitution, vetoed the act,or said no to the act, but Congress overrode his veto. Johnson, a Democrat, also did not want Nebraska admitted to the Union because the territory had majority Republican.

Nebraska joined the Union as the 37th state on March 1, 1867.  Lincoln became the state capital on July 29.
Andrew Jackson