My point in my earlier comment is that I don't agree with #2. He pays what the government says his "fair share" of taxes are, and why would we expect him to pay any more than that? I bet every one of us here pays exactly what we owe in taxes and not a cent more. That includes taking tax deductions. Even if you take no deductions, you're given a free $13k deduction on your taxable income.

Obviously in some theoretical moral sense billionaires are underpaying. But what's the income level you need to cross before you should willfully avoid tax deductions and ways of avoiding taxes. Now codify that into the law in some way.