My guess is that mega-rich people (most of congress) prefer that the IRS not be more litigous and well-funded than it already is because a significant number of

My guess is that mega-rich people (most of congress) prefer that the IRS not be more litigous and well-funded than it already is because a significant number of them have doubts about how legal their tax activities actually are. Also they certainly don't want to anger their donors and super PACs