Denialism may be too strong a term. But there seem to be a lot of people arguing that Obamacare has little or nothing to do with the rise in part-time employment. Some deny the rise is even happening, while others are content to deny that Obamacare is the culprit. Admittedly, it takes a little detective work, but if we systematically review the available empirical evidence in an even-handed fashion, the conclusion seems inescapable: Obamacare is accelerating a disturbing trend towards "a nation of part-timers." This is not good news for America.