President Trump is to address the conference of a recognised anti-LGBT hate group.
Trump will speak at the Values Voters Summit in Washington, DC on Friday.
He will become the first president to address the gathering, run by an organisation classed as a “hate group”.
The event hosts a coalition of white supremacists, far right activists and religious extremists among its attendees.
Trump spoke at the event, run by the Family Research Council (FRC), as a presidential candidate in 2016, but no former president has appeared at the event.
Among the other speakers is former Duck Dynasty star Phil Robertson who has said he wants to “rid the Earth” of “wicked” gays.
Alabama Senate candidate Roy Moore, who has said he doesn’t know whether or not gays and lesbians should be put to death, will also be addressing the event.
Moore, now backed by Trump, was recently removed as a state supreme court justice for instructing state employees to ignore the US Supreme Court ruling in favour of marriage equality.
In addition, Moore also has ties to an extremist pastor who has called for gay people to be put to death.
CNN reports that Moore has appeared multiple times on a radio show hosted by pastor Kevin Swanson, who is known for preaching that gay people must be stoned to death.
Another LGBT rights opponent Trump will be speaking alongside is Steve Scalise, the House Majority Whip.
Now fully recovered from the attack, one of Scalise’s first actions on his return to action will be to give a speech to the Family Research Council next week.
The Southern Poverty Law Centre lists FRC as an extremist group with an anti-LGBT ideology.
Its own website in 2016 said: “Family Research Council believes that homosexual conduct is harmful to the persons who engage in it and to society at large, and can never be affirmed.
“It is by definition unnatural, and as such is associated with negative physical and psychological health effects.”
Tony Perkins, the FRC’s president, said that Scalise’s return to health was not down to the brave actions of a lesbian police officer, but “an answer to prayer.”
“His fighting spirit in overcoming the odds is a source of inspiration for those who are fighting for the heart and soul of our nation and our culture.
“I look forward to welcoming my friend and former colleague back to the Values Voter stage.”
However, when his own home was destroyed in what he called a flood “of near biblical proportions,” the homophobic pastor insisted it happened because of God’s love.