Um, because Conservaderrps isn't running for POTUS? Other than that, I don't see why tax returns are anybody's business but the taxpayer and the IRS.
Exactly! The IRS has his tax returns - so clearly he hasn't done anything wrong.
Ignoring the obvious trolling (WHY aren't there rules against trolling like this??) by "Conservative", the IRS being in possession of a return does not mean the tax payer has done nothing wrong.
As for Mittens, he is hiding FACTS that are indeed the business of the US voter. He is the sneakiest and most dishonest of any candidate since Nixon. If he has nothing to hide, he should prove it. In light of his Lie du Jour, only an idiot would believe him about much of anything. He's a chronic liar. Period.