COMING UP: Don't miss Xfinity Monday Live with special guest former Bronco Joel Dreessen. Watch it on CBS4 at 6:30 p.m. or head to the Tavern Downtown to see it live!

U.S. v Edith Schlain Windsor

Sens. Mark Udall and Michael Bennet (credit: CBS)

Colorado’s Democratic Senators Sign DOMA Challenge

Colorado’s two Democratic Senators are signing onto a legal challenge against the federal Defense of Marriage Act.