The first time Barack Obama spoke at a national religious gathering, his remarks were greeted with a chorus of boos.
He was also the first sitting president to address a prayer breakfast for African Americans.
Now, for the first time in history, a sitting president has had a prayer on the national stage.
President Trump is not the only recent president to have a religious speech.
Pope Francis, the pontiff of the Catholic Church, has had multiple public events.
But Obama has been among the most public.
He made the rare move of delivering a public prayer to a joint session of Congress last year, a move that drew praise from religious leaders and sparked controversy.
The prayer also drew a strong response from some conservatives.
“We have an obligation to speak out and stand up for the rights of our fellow citizens,” said Rep. Mike Pompeo, R-Kan., one of the House Intelligence Committee’s leading critics of the administration’s surveillance policies.
Obama, in a series of statements during his first presidential term, frequently criticized religion as “an obstacle to freedom.”
He said in the same speech that “we must resist the temptation to become trapped in the world of faith,” an implicit reference to Christianity.
In addition to the president’s public prayers, Obama has visited mosques and other religious sites regularly.
But many of the president�s appearances were held behind closed doors, and many of his remarks on religion have been controversial.
Some conservatives argue that Obama�s religious views are more relevant to the current presidential campaign than he ever intended.
On Wednesday, the conservative news site Breitbart reported that the president is the only sitting president in the history of the United States to have no faith at all.
White House officials did not immediately respond to a request for comment.
At the White House, the president has frequently used religious symbolism in his speeches.
In 2011, he used the Bible to praise his successor, former President Barack Obama, during a ceremony honoring him.
He also prayed during the opening of a new library in the White Hall neighborhood in 2014.
Other presidents have spoken about religion during speeches.
President Bill Clinton, who was married to an atheist, used religious imagery in his first inaugural address in 1999, when he urged people to be religious and “be proud of the blessings that have come to you.”
Obama has also used religious symbols during his tenure, including the Muslim veil and a cross, as well as during his visit to the United Nations.