In his 2013 State of the Union Message Obama noted that one of his highest second term priorities was "tax reform in the spirit of bipartisan 1986 tax reform", the most regressive tax "reform" in US history (and the Democratic Leadership Council's (DLC) first major achievement after its 1985 formation).
Although delays in pushing TPP, TTIP and TISA through have distracted Obama from "tax reform", this article confirms that additional regressive tax reform is likely to be heaped on the lame duck agenda along with TPP and other regressive legislation.
Recall each of the past six years when Obama has signed regressive legislation during the end of year holidays when few voters are paying attention. Just as Bill Clinton demonstrated during the lame duck period following the 2000 election, be prepared for the biggest batch of regressive legislation ever being signed, at the end of 2016. Happy holidays.