So what?
What’s the crime?
If proven that the NDA and payments were to influence the election they could be treated as campaign contributions which have numerous restrictions. There is some issue with corporate campaign contributions also. Honestly it was to get indicted in front of his name. That being said, it’s still breaking rules. It all goes back to the OP that banging porn stars and/or paying them off just gives people you dislike the ammo to take you down.