They keep implying that the hush money was paid with campaign funds. I believe that would be a crime but they dance around and don’t say it outright. I don’t think that they can prove it. “Hush money “ is another way of saying a paid settlement with a confidentiality clause. Those agreements are entered into every day and are not illegal.
The hush-money thing is backwards. They are saying that the hush money, which could not have legally been paid for with campaign funds, is a violation because it represents an undeclared donation.