I saw this at Crooks & Liars:

In April, Congressional Republicans extracted $600 million in cuts from the IRS in return for a spending deal with President Obama, reductions which at the time were forecast to cost the Treasury $4 billion in lost revenue.

From whom would the money collected through improved enforcement come? Not wage slaves. Republicans (and, to a lesser extent, Democrats) know on which side their bread is buttered. This is just an overt case of “trickle down” theory working exactly as planned. That is to say, it is working as planned, but not as marketed. The people who sell these bills of goods are not now and never have been under the delusion that what they are saying is true.