Here's what I am betting you are worried about: that your tax returns show you broke the Buffett Rule in some years and, thanks to various legal devices and tax loopholes, you managed to avoid paying more taxes than you were legally required to do.
Shocking!
So, I ask you - after the Obama campaign denounces you for paying lower taxes than your secretary, or using tax loopholes legally, or depositing your money legally in Swiss bank accounts, or in Cayman Islands bank accounts, or storing your cash under your bed, or whatever, my question to you, to your campaign manager, to everyone, including my fellow liberal, Obama-supporting Democrats, is:
SO WHAT?
Let's assume worst worst worst case (which I must assume is at least partially true, or why else are you violating Crisis Management Rule 101?):
Let's assume you paid NO taxes in some years, or got a REFUND in others, on hundreds of millions of dollars of income, taking advantage of all the loopholes, deductions, write-offs, tax shelters, etc. - but again, ALL LEGALLY.