If Warren Buffet wants to pay more taxes, nobody is stopping him from sending in a check. The Feds welcome donations, but get none from the mega-wealthy - including offshore Soros and offshore Kennedy.
If you do not feel you are sufficiently taxed, don't complain - just ACT. Send it in, and give your conscience some relief.
Taxes are not progressive enough. h/t, Dr.X. (By the way, if it needs to be said, I disagree with this link, entirely. I am in favor of a flat tax of 13% on everyone, with no deductions and no increase above 13% except in wartime.)