Book excerpt: In Country of Exiles, William Leach, whose Land of Desire was a finalist for the National Book Award, explores the troubling effects of our national love affair with mobility. He shows us how the impulse to pull up stakes and find a new frontier has always battled with the need to put down roots, and how a new cosmopolitanism has seized our national identity. Leach takes us across a featureless America, where strip malls homogenize a once varied and majestic landscape, and where casinos displace the Native American spiritual connection to the land. He shows us a culture where everyone, from CEOs to office temps, abandons the notion of company loyalty, and where rootless academics posit a world without borders. With compelling vision and insight, Leach reveals the profound but often hidden impact of America's disintegrating sense of place on our national and individual psyche.