To put icing on the cake, Buffett is leaving most of his estate to the Bill and Melinda Gates Charitable Foundation to completely avoid/evade the Federal Estate Tax.  Buffett is a master at legal tax avoidance.  He only pretends to support higher taxes for crony capitalist paybacks.  He has no intention of paying higher taxes himself.

Wealthy people had no problem with the 16th Amendment that introduced the Progressive Income Tax because they can afford the lawyers and accounts who know how to use trusts and other legal strategies to avoid them.

Just prior to the 2008 election, my daughter said she was going to vote for Obama.  I said, "Have you considered the fact that his policy on Estate Taxes could cost you a million dollars of your inheritance?"  She said, "I don't care as long as that million dollars goes to the poor people I went to high school with."  I responded, "How 'bout taking your million and start a business that employs their parents with good paying jobs?"