For background, he was ordered to pay a penalty of some $300+ million because he overstated the worth of his real estate on loan applications. But my understanding is that none of his creditors actually lost money on these loans and that they did their due diligence on the loan applications. The perspective of most conservative media is that this was a political hit job on a victimless crime where no one was complaining, and that it'll have a chilling effect on real estate development because all developers overstate their property values in a similar way.
I have to admit though, all my news sources are right-leaning or center-right, so I don't know if I have the full picture. But from the sound of it, it seems like a transparently motivated by anti-Trumpism and that there wasn't really a victim to this supposed crime.