Church teaching forbids abortion, but it also opposes capital punishment as "inadmissible" under all circumstances. U.S. bishops and the Vatican have strongly called for humane treatment of migrants, citing the Biblical command to "welcome the stranger."

Pope Leo XIV joins environmental experts and campaigners from around the world for a climate conference near Rome Wednesday featuring "Terminator" star Arnold Schwarzenegger.Action hero-turned-environmental campaigner Schwarzenegger told a press conference at the Vatican Tuesday that it was "very important" for the Catholic Church to throw its weight behind the global challenge.