In America has been praised by literary critics. Publishers Weekly wrote, "As she did in The Volcano Lover, Sontag crafts a novel of ideas in which real figures from the past enact their lives against an assiduously researched, almost cinematically vivid background. Here again her signal achievement is to offer fresh and insightful commentary on the social and cultural currents of an age, with a distinctive understanding of how historical events forged character and destiny."[4] Sarah Kerr of The New York Times gave the book modest praise, writing, "Almost but not quite as lively as in The Volcano Lover, Sontag's prose here is lithe, playful: in spite of the listless plot, this book has flow. Indeed, In America reads so smoothly that one could almost accuse Sontag of placing too few demands on her readers. Stimulating ideas, as usual, lurk around every corner. But they tend to arrive pre-interpreted." She added, "Sentence by sentence, scene to scene, the writing in In America is utterly nimble. It's the ideas, somehow, that lag behind."[5]
John Sutherland of The Guardian was more critical, however, remarking, "Let's face it: if this was a first novel by a literary unknown it would have been lucky to make it into print. What makes In America an object of interest is less its page-turning readability than its significance as the latest move in Susan Sontag's brilliant career."[6]
