Dems are like teenage girls with their wedding book all made up.they have everything set except the biggest part, the crime (or groom)
The republicans investigated Clinton for everything under the sun, they impeached him for lying...and they lost.
The republicans couldn't reasonably prove Bill effin' Clinton was a liar...just let that sink in for a minute.
I can't help but think the democrats are going to keep investigating until they actually find something actionable, or until there is a new president. The republicans used the Clinton investigations to successfully limit his effectiveness on several agenda items, especially in the later years. The democrats would be stupid to impeach (at least with what is currently publicly known about the president and his dealings) at this point, but they might realize some advantage from a never-ending series of investigations into "possible wrongdoings".
The more I see, the more I become convinced it's all just theatre. It doesn't matter who the miller is...the millstone is turning and it will grind meal.