He doesn't even need to volunteer to pay more - all he needs to do is pay what he owes! Like most of Obama's closest friends and advisors, Buffett is a tax cheat that lectures others about paying taxes but doesn't pony up when it's his turn, which is why he is currently paying hundreds of thousands of $ to lawyers and accountants to fight the IRS in court over millions he owes in back taxes. Buffett is a lying clown.
The same is true of Al Not-so-Sharpton, who is a long time tax cheat that owes millions and has had IRS liens placed on his properties, but who was just invited to the White House to discuss the fiscal speed-bump.
Typical liberal hypocrites!
Liberals: Without double standards they'd have no standards at all!