The last time that the U.S. Sentencing Commission, the panel responsible for setting the federal sentencing guidelines, addressed the issue of white collar crime was over a decade ago. Here, the commission didn't actively work to reduce the penalties called for by the current guidelines, but rather to strengthen them, such that those convicted of everything from embezzlement and insider trading to fraud and money laundering faced potentially stiffer sentences.
In fact, some of the penalties called for by the revised federal sentencing guidelines were so stringent that many federal judges have chosen not abide by them over the years.
As you might imagine, this trend -- which is permissible given that the sentencing guidelines are advisory in nature -- has resulted in inconsistent sentences being handed down, which is exactly what the commission wants to avoid.