sentences:  The following year Underwood ran for a seat in the U.S. Congress formerly held by his elder brother Joseph as well as his son-in-law's father Harry Grider.Warner Underwood won as the candidate of the Know-Nothing Party (a/k/a American Party) to the Thirty-fourth, and was re-elected to the Thirty-fifth Congresses (March 4, 1855 – March 3, 1859).His most famous speech argued against admission of Kansas under the Lecompton Constitution.