The Statue of Liberty welcomes all to our shores and e pluribus unum, ‘out of many, one,’ appears on the Great Seal of the United States as well as on the reverse side of the dollar bill. Yet, as Richard N. Juliani so deftly and richly reminds us in his new book, Philadelphia’s Germans: From Colonial Settlers to Enemy Aliens, the immigrant story is far more complex and extraordinarily relevant at present, when xenophobia and tribalism again threaten the very fabric of the American experiment.