The Washington Post's most prominent claim to fame in that regard is David Fahrenthold's reporting on the Trump Foundation's various ethical (and probably legal

The Washington Post's most prominent claim to fame in that regard is David Fahrenthold's reporting on the Trump Foundation's various ethical (and probably legal) problems, including self-dealing (spending donated money for functions at his Golf Courses), misappropriations (buying a self-portrait from foundation money) and outright fraud (not paying out promised donations, lying about the amounts Trump himself contributes to the foundation) etc. His articles are at https://www.washingtonpost.com/people/david-a-fahrenthold/ https://www.washingtonpost.com/people/david-a-fahrenthold/ Regarding Seth Abramson, it's important to note that there is ample criticism of his rather sloppy methods. A nice summary of him and similar "independent journalists" is at https://thinkprogress.org/blue-detectives-collapse-trump-russia-a42a94537bdf/ https://thinkprogress.org/blue-detectives-collapse-trump-rus.... If ThinkProgress thinks some criticism of Trump may be too close to conspiracy theories than comfortable, it would seem to be rather suspect.