Jan. 5 (Bloomberg) -- Bloomberg View columnist Megan McArdle presents a commentary arguing that there is more than one reason that the U.S. tax code is so complicated, this leaves us vulnerable, not just to scams, but to a pervasive sense that the government may descend at any moment to punish us. This commentary aired on Bloomberg Radio.\u0010\u0010(Megan McArdle is a Bloomberg View columnist. The opinions expressed are her own.)