He can't. There is no provision in the IRS code to allow them to take more money than you owe. Remember, the IRS can only act as a collection point to receive what is OWED to the federal gov't.

>If Warren Buffet REALLY wanted to pay more taxes, all he would have to do is write a check to the US Government and voila, more taxes paid! He is using this as a platform to bash Republicans and it has a hollow ring. I encourage him and anyone else who feels guilty for making too much money to give their money to a worthy charity, not the US government. The government has an excellent track record of misappropriating, misspending and downright wasting money, so they should give it to me! I've managed to raise three kids, furnish multiple vehicles for each of them and still have a few coins in the bank.
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>Hey Warren, come on down!