Justice Anthony Kennedy’s Supreme Court retirement throws the spotlight on one of the most influential players in Washington, D.C., when it comes to deciding what individuals inhabit the centers of power.  

We are talking about Leonard Leo, executive vice president of the Federalist Society and the go-to guy for names of federal court appointees when Republicans rule the White House.

Alongside Leo, journalists should also be taking a close look at another Republican networker and talent-spotter, Kay Coles James, as of January the president of the Heritage Foundation. Both are devout Christians, a fact the media have reported. But few reporters have explored that aspect of their life stories in any depth, allowing good prospects for fresh, religiously themed features or interviews.

The Federalist Society, where Leo has worked since 1991, boasts a constituency of some 65,000 conservative attorneys, jurists, and law school students. Justice Neil Gorsuch, who provided the pivotal vote in three important 5-4 Supreme Court rulings this week, was on the lists from which candidate Donald Trump promised to choose his Supreme Court nominees in an unprecedented campaign gambit.

Trump’s prime resource in choosing those names was Leo, as recounted in a New Yorker profile by Jeffrey Toobin last year. Toobin says Leo “has met and cultivated almost every important Republican lawyer” of this generation. In addition to Gorsuch, he was the man behind the appointments of Chief Justice John Roberts and Justice Samuel Alito.

Leo was the chief Catholic strategist for George W. Bush’s re-election in 2004 and co-chaired Catholic outreach for the Republican National Committee. (The Religion Guy covered for The AP his briefing of Catholic delegates attending the party’s New York City convention.) Despite that partisan affiliation, President Barack Obama along with leaders of both parties in Congress appointed him to chair the U.S. Commission on International Religious Freedom.

Leo tries to attend daily Mass when possible and his “faith is central to all he does,” says Conor Gallagher of the Benedict Leadership Institute.