Something is going to break and someone is going to get hurt (or worse). He has had almost a million people going without pay for almost 4 weeks now. He is stressing a very large group of people, and someone is going to snap. He has pushed the shutdown far beyond the point that anyone before him has considered to be reasonable, so this will not pass the 'reasonable person' standard in regard to criminal negligence, reckless endangerment, or willful blindness. If something horrible happens as a result of this shutdown, he is going to be directly responsible.
We do not inherit the world from our parents. We borrow it from our children.