Billionares say things like that all the time but that's just for publicity. Truth is, if he really wanted to be taxed more, he could. There's no need to change

Billionares say things like that all the time but that's just for publicity. Truth is, if he really wanted to be taxed more, he could. There's no need to change any laws for that. His Berkshire Hathaway is already claiming a lot of tax breaks to lower their tax liabilities - if he wants to contribute more to federal budget he just needs to stop doing that :) After all, claiming a tax break is a privilege, it's not mandatory.