That's correct about trump...thus far. But the investigation already has, and will continue to expose crimes perpetrated by his staff. To date, Manafort/Flynn are screwed....the latter much more than the former.
Kushner is next.
Many leaks are coming directly from trump, who believes he's throwing more smoke into the process. Sadly, he has the attention span of a gnat, so he never thinks through his actions before creating another nail in his coffin.
The other leaks are coming from his staff, who have grown disgusted with the way he conducts the business of running the country. They are patriots who realize the danger of having an adolescent run things.