He is audited every single year, and there is very deep scrutiny of his personal finances. There are many in the IRS who would love to find something wrong.
It's the political favours and support that mattes.
I will say this: the laws concerning 'conflict of interest' are very weak in the US for the office of the Pres. It's possible that a Malaysian leader could buy favour by offering him a future sweet deal on land for a Casino in Manila type thing. Again - I don't like Trump, and don't think he's evil and probably won't be looking for that kind of deal ... but I also bet he just might not be able to resist!
Anyhow - as of today, he owes almost nothing politically. That's what's weird about it: he's the least civic minded pres in modern history - who also is the most unencumbered! Crazy.
