Basically: I committed a crime while trying to stay in office illegally, but you can’t hold me to account because I’m running for office.
Pretty much “I’m a big-deal Republican, so you can’t apply the normal rules to me, even though others have run for President from jail”
I expect so since I’m no lawyer, makes me kind of curious what the most mundane reason any of our relatively few impeachments where for. Even the first of Trump’s I don’t know would truly fit an existing criminal law without some work, more just acting like a tool against the interests of the nation.