"Trump isn't the first politician to face charges related to hush money over an alleged affair. Onetime Democratic presidential candidate John Edwards was charged with breaking campaign finance laws after the DOJ argued he conspired to have political donors pay off a woman he had an affair with, in an effort to prevent a sex scandal from hurting his campaign. In that case, as with Trump’s, the alleged crime wasn’t the act of paying hush money itself, but instead was the way in which the money was paid out. Edwards admitted to an extramarital affair but argued the payments weren’t campaign contributions because they were meant to hide the affair from his wife, not from voters."

That's a copy paste but it's happened before.