In 2004, during the debate for the now-defunct Federal Marriage Amendment, tensions on Capitol Hill for the lesbian, gay, bisexual and transgender community had reached unprecedented levels. Gay staffers were being singled out in an aggressive "outing" campaign, with hostile phone calls to their homes and offices, and even personal confrontations. Four staffers decided to take action, forming the Gay, Lesbian and Allies Senate Staff Caucus. "It was imperative for the LGBT community to have a safe space,” said Jeffrey Levensaler, one of the founders of GLASS and currently deputy chief of staff to Sen. Tammy Baldwin, D-Wis.
“People both on and off the Hill were just looking for someone to talk to,” said Lynden Armstrong, a GLASS co-founder who now works as director of communication and technology integration for the Senate sergeant-at-arms. "It was our first very public opportunity to support our community," said Armstrong, who worked for Sen. Pete Domenici, R-N.M., at the time. In the 10 years since, the LGBT community on Capitol Hill has seen drastic changes: the repeal of "don't ask, don't tell;" the Supreme Court's United States v. Windsor ruling, which led the Senate Disbursing Office to extend employee benefits to married same-sex spouses and their families; the election of the first openly gay senator (Baldwin) and sweeping changes in public opinion on same-sex marriage.