There are only two possible reasons for Trump to not release his tax returns:
- He believes that his finances are nobody else’s business.
- He has something to hide.
The problem Trump has is that if he wants to keep his tax returns private just on principle, he’s really not fooling anyone except his faithful (and they wouldn’t care what his tax returns say anyway). Everyone else believes Trump to be without principles, so that just sounds like a bad excuse.
Therefore, it looks as if Trump has something to hide. And the longer he stalls, the worse it’s going to look, because when our imaginations come up with a worse scenario than what really exists, Trump would release them. The fact that he hasn’t means that what’s in there is probably worse than what we’re imagining.