The bar for opening a criminal inquiry is low. A "reasonable indication" that a crime has been committed. (Basically something more than a hunch.)
nytimes.com/2019/10/24/us/…
We have heard no public evidence that would support opening a criminal investigation. The scope of it could be very narrow.
The mere fact that a criminal inquiry is open can be enough to serve Trump's ends. Nothing more may come of this than this headline. We'll have to wait and see. /end