Actually, the real ”Buffett rule” was Obama’s attempt to impose a minimum 30 percent tax rate on all income over $1 million. This was designed to negate the effects of the capital gains rates enjoyed by Warren and his friends. Redistributionists loved the Buffett rule. After all, it’s fun to take other people’s money. In any event, Warren is on record calling for higher income and estate taxes. In fact, he told CNBC earlier this year that he would be happy paying higher taxes. My liberal friends gush over Buffett’s noblesse oblige.