The most recent financials that I could find shows that Buffet was paid a salary of just $100,000(his usual base pay) and director fees of $75,000. Hence his income is less than $200,000, and the Buffet rule would not increase the amount he pays.
If they really want to get money from the Rich they should Tax the net worth of the individual, and tax their freakin’ foundations.
That’s exactly what the petition calls for! >:)