KEITH HENNESSEY: Obama’s Buffett Rule Is Vaporware. “The President has not actually proposed a tax policy that fits this principle. Neither his budget nor the tax proposals released by Treasury include any policy specifics to establish a new minimum 30% tax rate for those with income > $1M. . . . It’s OK to call on Congress to enact a policy that you describe only through broad-based principles. But when you do this you cannot also claim ‘We won’t be adding to the deficit.’ The only way you can legitimately make such a claim is if you offer a specific proposal to back it up.” This is more like voting “present.”