The US Government accepts donations all the time. I have a client, who a couple of years ago, was told by the IRS he did not have to pay a certain tax because the statue had expired. He paid it anyway as a donatiion and the government freely accepted it. If Buffet wants to make a donation to the government, they would accept it.
"Dear John" - - -usually works for me.
Actually had a client years ago - -that gave me a bad check - - -so, I gave up after 3 letters - - -then - -they actually had the NERVE to call for an appointment the following year - - -I made the appointment - - -never said a word - -prepared the tax return - -knowing they were getting a very large refund - -and then presented them with both bills - - told them I would only take CASH before releasing and filing the tax return.
They were very indignant - - - -but - -after they actually WENT to H&R - -they came back with the cash. A few weeks after - -I sent them a "Dear John" letter -- -