Hugh Hewitt: Trump rode to power on the modern Know-Nothing movement

It has been 30 years since Princeton University professor James McPherson published his extraordinary “Battle Cry of Freedom: The Civil War Era,” which won a much deserved Pulitzer in 1989. Great books remain references for decades, and now the book deserves a rebirth of sorts. Listening to McPherson’s account of the 1850s, for example, is oddly relevant even as history makes clear that the relatively young Union was in a far more perilous condition then than ours is today.Ther