WASHINGTON, United States (AP) – As vice-president in 2012, Joe Biden endeared himself to many LGBTQ Americans by endorsing same-sex marriage even before his boss, President Barack Obama.

Now, as president-elect, Biden is making sweeping promises to LGBTQ activists, proposing to carry out virtually every major proposal on their wish lists. Among them: Lifting the Trump Administration’s near-total ban on military service for transgender people, barring federal contractors from anti-LGBTQ job discrimination, and creating high-level LGBTQ-rights positions at the State Department, the National Security Council and other federal agencies.

In many cases the measures would reverse executive actions by President Donald Trump, whose Administration took numerous steps to weaken protections for transgender people and create more leeway for discrimination against LGBTQ people, ostensibly based on religious grounds.

In a policy document, the Biden campaign said Trump and Vice-President Mike Pence “have given hate against LGBTQ+ individuals safe harbour and rolled back critical protections”.

Beyond executive actions he can take unilaterally, Biden says his top legislative priority for LGBTQ issues is the Equality Act, passed by the House of Representatives last year but stalled in the Senate. It would extend to all 50 states the comprehensive anti-bias protections already afforded to LGBTQ people in 21 mostly Democratic-governed states, covering such sectors as housing, public accommodations and public services.

Biden says he wants the act to become law within 100 days of taking office, but its future remains uncertain. Assuming the Bill passes again in the House, it would need support from several Republicans in the Senate, even if the Democrats gain control by winning two run-off races in Georgia. For now, Susan Collins of Maine is the only GOP co-sponsor in the Senate.

Critics, including prominent religious conservatives, say the Bill raises religious freedom concerns and could require some faith-based organisations to operate against their beliefs.

The Equality Act “is a dangerous game changer” in its potential federal threat to religious liberty, said the Rev Albert Mohler, president of the Southern Baptist Theological Seminary in Louisville, Kentucky.

Representative Chris Stewart, a Utah Republican, tried to strike a compromise last year that would have expanded LGBTQ rights nationwide while allowing exemptions for religious groups to act on beliefs that could exclude LGBTQ people. His proposal won support from The Church of Jesus Christ of Latter-day Saints and the Seventh-day Adventist Church but was panned by liberal and civil rights groups.

“Anti-equality forces are trying to use the framework of religious liberty to strip away individual rights,” said Alphonso David, president of the Human Rights Campaign, a national LGBTQ-rights organisation.

Among the actions that Biden pledges to take unilaterally, scrapping Trump’s transgender military ban would be among the most notable.

Jennifer Levi, a Massachusetts-based transgender rights lawyer, said it’s clear Biden has the authority to do so after taking office.

Nicolas Talbott, a transgender man whom Levi has represented in a lawsuit seeking to overturn the ban, called that “a huge relief”.

“I look forward to being allowed to re-enroll in Reserve Officer Training Corps (ROTC) so I can continue to train, keep up my fitness to serve, and become the best army officer I can possibly be,” Talbott said via e-mail.

Some of Biden’s other promises:

— Appoint an array of LGBTQ people to federal government positions. There’s wide expectation that Biden will nominate an LGBTQ person to a Cabinet post, with former presidential contender Pete Buttigieg among the possibilities.

— Reverse Trump Administration policies carving out religious exemptions allowing discrimination against LGBTQ people by social service agencies, health care providers, adoption and foster care agencies and other entities.

— Reinstate Obama Administration guidance directing public schools to allow transgender students to access bathrooms, locker rooms and sports teams in accordance with their gender identity. The Trump Administration revoked this guidance.

— Allocate federal resources to help curtail violence against transgender people, particularly transgender women of colour. Rights groups say at least 38 transgender or gender-nonconforming people have been killed in the US this year.

— Support legislative efforts to ban so-called conversion therapy for LGBTQ minors.

— Bolster federal efforts to collect comprehensive data about LGBTQ people in the US by adding questions about sexual orientation and gender identity to national surveys.

— Ensure that LGBTQ rights are a priority for US foreign policy and be prepared to use pressure tactics, including sanctions, against foreign governments violating those rights.

Whatever happens in Washington, some activists worry that Republican-controlled state legislatures may push anti-LGBTQ Bills, such as curtailing the ability of transgender youth to access certain medical treatments or participate in school sports. They are also concerned that an influx of conservative federal judges appointed by Trump might lead to rulings allowing religious exemptions.

Earlier this month the Supreme Court — now with a solid conservative majority — heard arguments on whether a Catholic social services agency in Philadelphia should be able to turn away same-sex couples who want to be foster parents, while still receiving local government funding.

Tim Schultz, a religious freedom advocate, outlined two potential paths for the debate over the Equality Act: “ongoing legislative gridlock, regulatory trench warfare and judicial decisions, which will happen independently of what the president does,” or active engagement by Biden for a new strategy that can win bipartisan support in the Senate.

The first path would provide only “temporary satisfaction”, given that regulatory moves can be undone by future presidents, said Schultz, president of the non-profit 1st Amendment Partnership.

Nathan Diament, executive director of the Orthodox Union Advocacy Center, cited Biden’s campaign-trail appeals for unity — and his commitment to faith outreach — as positive signs for more engagement on the issue next year.

“He and his team will be very well-positioned to broker compromise if they want to, to get this done,” said Diament, who has advised both the Trump and Obama administrations.