"The chastening of America, with civil unrest, expatriates looking on in humiliation, and citizens of other countries savoring the once mighty country’s downfall, is the grim scenario Ken Kalfus envisions in his latest novel, “2 A.M. in Little America.” Whichever side one takes on the issues bedeviling America, readers familiar with his work will probably agree on this point: Kalfus is a perceptive guy. "