In fact, his corporations pay a 35% Federal Tax... Then the dividends they pay, also get hit with a 28% tax...

Warren is correct however that his capital gains are taxed at only 15%.

Nothing stops him from reporting them all as short-term capital gains however... In fact doing so would make his 1040 much simpler... Then I believe his capital gains would be taxed at his marginal tax rate of 32% or so...

Warren is also free to stop taking a deduction or two... There is no law that says for example: "If you give to charity, then you must take the charitable deduction..."

Warren could give to charity, and take no charitable deduction if he so chooses.

So go ahead Warren... Pay more tax if you want too.