Boehner extended the invitation to the pope last March, on the one-year anniversary of the pope's election. Some analysts viewed the invitation as a chance for the Republican–controlled House to highlight poverty and income inequality, key pillars that Pope Francis has touched on often.
The last pontiff to visit Washington was Pope Benedict in 2008.
In addition to Pope Francis' three-city visit to the United States, he will also travel to South America and Africa this year.
Times staff writer Michael Muskal contributed to this report.