He did not run for reelection after a formal reproval from a House Ethics Committee for his sexual misconduct while in office.
A member of the Democratic Party, he previously was a member of the Nevada Senate from 2006-16.
He was Nevada's first Latino member of the U.S.
House of Representatives and Kihuen described himself as the first "Dreamer" elected to Congress.
In December 2017, House Minority Leader Nancy Pelosi called on Kihuen to resign in response to sexual misconduct allegations against him by a female campaign staff member, as reported by BuzzFeed.
He refused to resign but did not run for reelection in 2018.