The U.S. Senate voted 61-36 on Tuesday to officially pass the Respect for Marriage Act, a historic piece of legislation that is expected to soon become law after members in the U.S. House of Representatives sign off on a bipartisan amendment added by their Senate colleagues.

Designed as a vehicle to mitigate the fallout if the U.S. Supreme Court’s conservative supermajority guts the constitutional protections for marriage equality, the bill was narrowly construed — in part to help guarantee that it withstands potential challenges from conservative legal actors.

Nevertheless, the Respect for Marriage Act is a landmark bill that has been backed by virtually every LGBTQ advocacy organization in the country. The legislation repeals the Clinton-era Defense of Marriage Act while enshrining into law substantive protections for same-sex couples.

Regardless of whether or how the high court might decide to revisit the marriage question, the Respect for Marriage Act will protect the federally ordained rights and benefits that have long been enjoyed by married gay and lesbian couples. And should the court pave the way for conservative states like Texas to renew their bans on same-sex marriage, the law will require them to officially recognize and honor those that are performed in jurisdictions where they remain legal.

Despite earning broad bipartisan support from lawmakers in the House, which passed its version of the bill this summer with an overwhelming majority — including votes from 47 Republican members — the Respect for Marriage Act faced an uncertain future in the Senate.

Conservative members in the chamber’s Republican caucus argued the bill would jeopardize religious freedoms, concerns that a group of five bipartisan senators sought to allay with an amendment that, among other provisions, clarifies the right of religious nonprofit organizations to refuse “any services, facilities, or goods for the solemnization or celebration of a marriage.”

Writing the amendment were Sens. Susan Collins (R-Maine), Rob Portman (R-Ohio), Kyrsten Sinema (D-Ariz.), Thom Tillis (R-N.C.) and Tammy Baldwin (D-Wis.), who was considered the driving force behind the bill’s passage through the Senate.

Several Republican senators proposed additional amendments that — per a narrow procedural vote before and another shortly after the Thanksgiving break — were not put up for debate, thereby allowing the Respect for Marriage Act to clear the Senate with Tuesday’s vote.

Barely surpassing the 60-vote filibuster-proof majority with one extra “yea,” the Senate’s passage of the bill came despite the best efforts of conservative opponents who had run coordinated campaigns to erode support among GOP members.

President Joe Biden and Vice President Kamala Harris each issued statements shortly after Tuesday’s vote.

The president celebrated the “bipartisan achievement” by Congress, writing: “For millions of Americans, this legislation will safeguard the rights and protections to which LGBTQI+ and interracial couples and their children are entitled. It will also ensure that, for generations to follow, LGBTQI+ youth will grow up knowing that they, too, can lead full, happy lives and build families of their own.”

Harris wrote: “The Respect for Marriage Act ultimately stands for a simple principle: all Americans are equal and their government should treat them that way. Today, we are one step closer to achieving that ideal with pride.”

The Congressional LGBTQ+ Equality Caucus also praised the victory.

“Today, a bipartisan group of 61 Senators made clear that this country will not roll back the clock on marriage equality,” said Congressman David Cicilline (D-R.I.), chair of the Equality Caucus. “The Respect for Marriage Act is a crucial safeguard for LGBTQ+ people whose lives have been forever changed by Obergefell v. Hodges and Americans who are in interracial marriages thanks to Loving v. Virginia. On June 26, 2015, the Supreme Court declared marriage equality as the law of the land. Today, the Senate ensured those marriages will continue to be protected.”

LGBTQ groups celebrate the win

“Diverse faith traditions across the nation came together to demand respect for LGBTQ+ Americans – we staked our ground and refused to let this opportunity slip away, ” said Rev. Paul Brandeis Raushenbush, president of the Interfaith Alliance, in a statement Tuesday.

“The  LGBTQ+ community has faced ongoing deadly violence, legislative assaults and constant threats — including the deadly shooting in Colorado Springs barely one week ago,” said Kelley Robinson, president of the Human Rights Campaign, in a statement from the organization.

“Today, with the passage of the Respect for Marriage Act in the Senate — a historic moment that marks the first federal legislative win for LGBTQ+ equality in over 10 years, since the repeal of Don’t Ask Don’t Tell — the 568,000 same-sex married couples in this country can breathe a sigh of relief that their marriages will be protected from future attacks,” said Robinson, who yesterday began her tenure as the first Black queer woman to lead America’s largest LGBTQ organization.

GLAAD President Sarah Kate Ellis responded on Twitter and in a statement, writing: “As so many LGBTQ people face uncertainty and harm on the state level and extremists on the Supreme Court vow to reconsider the landmark Obergefell decision, this victory will provide comfort and security to millions of people and their families.”

“Today’s bipartisan vote in the Senate to pass the Respect for Marriage Act is a proud moment for our country and an affirmation that, notwithstanding our differences, we share a profound commitment to the principle of equality and justice for all,” reads a statement from National Center for Lesbian Rights Executive Director Imani Rupert-Gordon.

LGBTQ Victory Institute President Annise Parker said, “This landmark piece of legislation protects the marriages of millions of LGBTQ Americans who have not slept well for months, wondering if our marriages would be dissolved by an activist court. While the Respect for Marriage Act is undoubtedly one of the most important pro-LGBTQ laws ever passed, it does not require states to grant marriages to LGBTQ couples. Until then, our fight is not over.”