"I have always defined marriage as between a man and a woman. I believe this federal amendment is the best option available to Congress to uphold traditional marriage," Matheson said in a statement.

Utah Republican Reps. Chris Cannon and Rob Bishop also voted for it.

Bishop called marriage between a man and a woman the "basic institution in our society and I am committed to its preservation."

"Amending the Constitution is a serious matter, but the family and the fabric of our society are worth defending, so I supported this proposed amendment," Bishop said.

Cannon concurred.

"Though I have great reservations about amending the U.S. Constitution, an amendment is our last resort to reign in an unchecked judiciary," Cannon said.

Utah's vote

How Utah's House members voted on a proposal to amend the Constitution to define marriage as a union of a man and a woman:

Rep. Rob Bishop, Yes

Rep. Chris Cannon, Yes

Rep. Jim Matheson, Yes