http://www.opinionjournal.com/editorial/feature.html?id=110010855 Movin' On Up A Treasury study refutes populist hokum about "income inequality." Tuesday, November 13, 2007 12:01 a.m. EST If you've been listening to Mike Huckabee or John Edwards on the Presidential trail, you may have heard that the U.S. is becoming a nation of rising inequality and shrinking opportunity. We'd refer those campaigns to a new study of income mobility by the Treasury Department that exposes those claims as so much populist hokum. OK, "hokum" is our word. The study, to be released today, is a careful, detailed piece of research by professional economists that avoids political judgments. But what it does do is show beyond doubt that the U.S. remains a dynamic society marked by rapid and mostly upward income mobility. Much as they always have, Americans on the bottom rungs of the economic ladder continue to climb into the middle and sometimes upper classes in remarkably short periods of time.