Pope Francis will be the first Roman Catholic Church leader to address a joint meeting of Congress on Sept. 24, House Speaker John Boehner said Thursday.

The Associated Press reported Francis was invited to Capitol Hill to address American lawmakers.

"We're humbled that the Holy Father has accepted our invitation and certainly look forward to receiving his message on behalf of the American people," Boehner said.

The pope is also expected to visit the White House, speak at the United Nations and participate in a Catholic rally for families in Philadelphia, during his first visit to the United Sates.

Francis has taken positions on some issues with which Republicans who now control the House and Senate may disagree. Immigration has been a centerpiece of his pontificate, and his stance is to help those coming into the United States.

According to Pope Francis, the world is indifferent to immigrant suffering. He urges wealthier countries to take in more people.

Other issues the Argentine-born pope addresses are the global financial system, trickle-down economic theories and climate change. He says climate change is mostly man-made, and he plans on releasing a teaching document on the issue this summer.

President Barack Obama said he is looking forward to welcoming the pope.

"Like so many people around the world, I've been touched by his call to relieve suffering, and to show justice and mercy and compassion to the most vulnerable," the president said.

House Minority Leader Nancy Pelosi said, "We are eager to welcome His Holiness to the U.S. Capitol and we look forward to hearing his call to live our values, to protect the poor and the needy, and to promote peace."

Senate Majority Leader Mitch McConnell said, "[Francis] is moving the hearts of millions and inspiring a new generation with an engaging and compelling style."

The Catholic leader will speak in front of Congress where 31 percent of its members are Catholic and 57 percent are Protestant.