(AP Photo) In this Feb. 27, 1940, file photo, Pope Pius XII receives the special envoy to the Vatican, Myron C. Taylor, who presented a letter from U. S. President Franklin D. Roosevelt. Pope Francis said Monday, March 4, 2019, he has decided to open up to researchers the Vatican archives on World War II-era Pope Pius XII, who has been accused by Jews of staying silent on the Holocaust.