Wrong! Mueller was interrupted temporarily with the Ukraine scandal. There is way more than enough to impeach by way of the Mueller report. It will be part of the articles of impeachment.
There aren't going to be "articles of impeachment" voted upon.
Because if there is a vote, there are only two possibilities- (1) they will fail to pass, and Nancy will look like an incompetent boob. Those D's who voted "aye" for it in Trump districts will never live it down.
(2) Nancy will get the 218 votes, and loses all control of the measure. It falls under control of The Turtle, who has promised a full dress trial when the Pencil Necked Geek, Hunter and Sleepy Joe as well as President Zelensky- in addition to Comey, Mueller, Brennan, etc., will all be called to testify openly. It will take months and keep the leading D's off the campaign trail. And in the end, Trump will still be exonerated, right before the election. Sounds like a tremendous theme for the campaign.