WASHINGTON - The Trump administration has approached the wife of former House Speaker Newt Gingrich to be the next U.S. ambassador to the Vatican, days before President Donald Trump embarks on his first foreign trip.



Trump will nominate Callista Gingrich for the post, two people with direct knowledge of the discussions said Monday. The officials spoke on condition of anonymity because they were not authorized to speak publicly before an official announcement.



Trump's foreign trip this month includes a stop at the Vatican.



The White House did not immediately respond to a request for comment.



If nominated, she would require Senate confirmation.



Callista Gingrich is president of Gingrich Productions and has produced a number of documentaries, including one about Pope John Paul II.



She worked for the House Committee on Agriculture as chief clerk until 2007. She was a key figure in her husband's 2012 bid for the Republican nomination.



She was a congressional aide when she began a six-year affair with Newt Gingrich, then a married Republican congressman.



In 2012, Gingrich's second wife, Marianne Gingrich, told ABC News that he had proposed an "open marriage" so he could continue to see Callista Gingrich without divorcing.



The former House speaker denied the charge.



He converted to Catholicism in 2009, after years of attending mass at the Basilica of the National Shrine of the Immaculate Conception in Washington, D.C., where Callista Gingrich has performed in the choir.

Pope Francis addresses the crowd during the Regina FILE - Pope Francis addresses the crowd during the Regina Coeli prayer at St Peter's square at the Vatican. FILE - Pope Francis addresses the crowd during the Regina Coeli prayer at St Peter's square at the Vatican.

Trump's vision for foreign relations and diplomacy has been starkly different to that promoted by the vastly popular Pope Francis. Francis has spoken of the need for bridges between nations, while Trump has advocated for walls and travel restrictions as a means of national security.



Francis has previously remarked that anyone who wants to build walls to keep migrants out is "not Christian."



Francis also has called for an end to the use of fossil fuels, while Trump has pledged to cancel payments to U.N. climate change programs and pull out of the Paris climate accord, although his recent actions and statements have cast some doubt over whether withdrawal from the agreement is still planned.



But the president and the pope share a populist appeal and speak with a down-to-earth simplicity that has endeared them to their bases of supporters. And both share a common concern about the plight of Christians in the Middle East at the hands of Islamic militants.



Speaking to reporters while traveling home Saturday from a trip to Portugal, Francis said he would listen respectfully to what Trump has to say when the two meet. Trump will call on Francis midway through his first foreign trip, after visiting Saudi Arabia and Israel and before attending a NATO summit in Brussels and a G-7 summit in Italy.



"I never make a judgment about a person without hearing him out,'' the pope said.