I can prove that Trump has attempted to mislead the public with White House statements; made public attacks, and possible pardon offers to potential witnesses and that he has embarked on a broad effort to interfere with the investigation against him.... simply by quoting his twitter feed, anyone can its there for all to fucking see.
And I hate to break it to you Trumplets but that's called .. Obstruction-of-justice.
https://www.justice.gov/usam/crimina...s-witnesses-or
US Code Title 18 Section 1512