Colorado U.S. Senator Mark Udall at a gay-rights event this weekend in Denver said he supports marriage equality for all Americans. Udall joins a growing list of lawmakers who have gone on record in support of ending the era where the federal Defense of Marriage Act and where constitutional bans like Colorado's Amendment 43 blocked LGBT couples from the legal protections and advantages provided by the state through marriage. Udall is the 18th sitting U.S. Senator to state publicly that he supports efforts to make gay marriage legal.