On a different matter involving trial lawyers and an industry group, they reported a "scandal" where there was none. I am familiar with that issue (so I have my own biases!). It was my opinion that they were repeating the trial lawyer's argument and calling that an investigative journalism piece. Others may disagree with my assessment. I do not want to link to that story here.
This is one reason why I choose not to financially support ProPublica.
EDIT: I'm getting sick of the downvotes on Hacker News. This is not reddit where a downvote == disagree. Just don't upvote it. It's frustrating to take a few minutes to write a comment and then watch it get nuked because it's "controversial". But please feel free to downvote away because my off-topic rant.