When Pope Francis arrives at the White House at the start his U.S. visit, he will be greeted by a cross-section of American religious life - from leaders of major evangelical groups to liberal Protestants and a Roman Catholic nun who leads bus tours advocating for social justice.
Also present will be a gay Catholic blogger Aaron Ledesma who credits compassionate statements by the pontiff for bringing him back to the church.
Thousands are expected on the South Lawn on Sept. 23 to help President Barack Obama greet Francis as he embarks on a tour through Washington, New York and Philadelphia that will include Masses, meetings with immigrants and speeches to Congress and the United Nations.
Among those who confirmed their attendance at the White House reception are the Rev. Joel Hunter, an evangelical megachurch pastor from Florida who is a confidant of Obama on spiritual matters; the Rev. Leith Anderson, president of the National Association of Evangelicals, which represents about 40 conservative Christian denominations; and the Rev. Samuel Rodriguez, president of the National Hispanic Christian Leadership Conference, a major U.S. Latino evangelical group that, along with the U.S. Roman Catholic bishops, has pressed lawmakers for immigration reform.
Also in the audience will be Episcopal Bishop Gene Robinson, the first openly gay Anglican bishop who's now a senior fellow at the Center for American Progress, a think-tank with ties to the Democratic Party, and Sister Simone Campbell, executive director of the Catholic social justice lobby NETWORK, and a leader of the "Nuns on the Bus" advocacy tours.
Campbell's group had been singled out in the Vatican investigation of the main umbrella group of U.S. nuns, an inquiry that began under Francis' predecessor, Pope Benedict XVI. The investigation ended this year with no major changes for the nuns' leadership group, and with a thank you from Francis for the work of religious sisters.
On this visit, the pope is expected to highlight the need for a generous welcome to immigrants and protection of the environment - two priorities of his pontificate.
"I think it's so important that the pope is visiting because his global message is especially important for the United States," said Campbell, who will also attend the pope's speech to a joint meeting of Congress. "His message of changing our throwaway culture and to address the crisis of exploitation is really the key to changing our world to be more inclusive in the economy and more caretaking about the earth - and a lot of this policy starts in the U.S."
A White House spokesman did not respond to requests for details of the reception. But more than 13,000 people filled the South Lawn when Pope Benedict XVI visited in 2008.
The ceremony for Francis falls on Yom Kippur, the Jewish Day of Atonement and one of the most important days of the year for Jews, which means American Jewish leaders aren't expected to attend. Still, the reception will showcase the theological breadth of the country's religious groups. Imam Mohamed Magid, who leads the All Dulles Area Muslim Society, a mosque with thousands of members in the Washington area, will also attend the event.
"I hope he'll see there's tremendous good in this country," said Archbishop Charles Chaput of Philadelphia, in recent remarks about the pope's five-day visit. Chaput will host Francis at the Vatican's World Meeting of Families on Sept. 26 and Sept. 27.
Francis and Obama will talk privately after the South Lawn reception. The president hopes to discuss the environment, immigrants and refugees, and "protecting religious minorities and promoting religious freedom around the world," the White House said.