ISIS leader Al-Baghdadi killed in Syria; Vice President Mike Pence; former Rep. Trey Gowdy; Sen. John Kennedy (R-La); 2020 Democratic presidential candidate Amy Klobuchar; former national security advisor Susan Rice (book, "Tough Love"); political panel discussion with Jamelle Bouie, Nancy Cordes, Jonah Goldberg, and Olivia Kuzzi;—anonymous