Steve Inskeep, NPR's Morning Edition co-host, will share the story of a 19th-century American power couple who greatly influenced the United States' push west. John Frémont, an explorer, writer, and Manifest Destiny-type army officer, was the Republican Party's first-ever presidential nominee. His wife Jessie acted as his top political adviser, and the two of them, while advocating westward expansion, also backed abolition and women's rights.