We know how they do it.

First they write the tax law changes they want.

Then they buy enough Republican Congressmen to put their tax plans in play.

Take that list of the biggest tax dodgers and it probably correlates well with the list of largest Republican donors from any of those sectors.

It's no mystery.  It's how a Republican Congress works.

What's a mystery is why Republican voters continue to elect people who don't give a whit for their own best interests.

Now that is a real mystery.