Really? So why all the endless hearings on Benghazi - shouldn't they have been able to "prove" everything right away?  Why does everyone say it typically takes a long time to conclude such investigations? 
And let's not forget that Trump - and his buddy Putin, who has his fake news generators out there -is doing everything he can to impede the investigation.  And of course, there's the fact that Trump is the most notorious liar if all time and his campaign/administration and staff aren't much better if at all.  
He's going down.