Comey needs to be asked about why he didn't brief Congress in the quarterly updates and why the decision was made not to brief Congressional leadership for months as Elise Stefanik questions him on March 17, 2017 (start at the 1:50 mark).
Comey answers 'because of the sensitivity of the matter', let that sink in!
The answer is obvious it was a cover up and giving Congress a briefing would possibly expose their deviant actions of their attempted coup!!!