Imperfect Union

John Frémont named the Golden Gate Bridge, and he was looking to expand trade into China. Along the way, the Frémonts became so famous that their name can be found on landmarks all over the West. But their impact wasn't always positive. Guest: Steve Inskeep, author of "Imperfect Union: How Jessie and John Frémont Mapped the West, Invented Celebrity, and Helped Cause the Civil War"; host of NPR's "Morning Edition" and NPR's morning news podcast "Up First"