D's have the press and know that their base will not be moved by facts or even indictments. I speculate that indictment of Comey, for example, would increase support for the D party, as the "party of the oppressed." This is a recurring pattern. These are not good people, not the elected, and not the voting supporter.
Nadler asserted that Trump committed the crime of obstruction by actions stated in the Mueller report. Let the impeachment circus begin!