Worth pointing out that you are looking for a legal technicality, and the jury is not the trier of the law. The jury is the trier of facts, so is not the primary party for judging your legal technicality.
trump committed a crime by falsifying business records. That was an action. The question is rather how bad his crime is, which depends upon intent. The intended crime does not have to be proven, just the intent to either commit or coverup the crime has to be proven.
Let's say trump was falsifying business records to cover up a murder. Even if the murder did not happen, if he intended to cover it up, that makes it a felony. Your legal technicality has been laughed out of court, because it does not exist.