It’s easy to forget, given the sensitivities that have been awakened in this country since 9/11, thrusting lifelong citizens under suspicion for having foreign-sounding names and subjecting visitors to the indignity of being fingerprinted, that America was conceived in a spirit of openness, as a land where people could build new identities, grounded in the present and the future, not the past. This dream, despite current fears, has in great part been made real.

A review of Jhumpa Lahiri's "Unaccustomed Earth."