It isn’t a simple investigation. You know like...Did X murder Y. Or Did X rob the store. Or did X write a bad check.
This investigation necessarily involves money laundering investigations. That is a complex investigation and necessarily involves looking at all real estate transactions. One key way that Russians launder money is through real estate.
Think of it as a RICO investigation. It is that kind of in depth look at the connections investigation.
This team is the same one you would put together to investigate Clinton if you could. (well..except that they are Hillary supporters). So if you are investigating Clinton you wouldn’t want obvious Clinton Supporters, right? Same is true of Trump. You don’t want it laden with Trump supporters.
The bigger question for me here is why isn’t there a Clinton investigation. Perhaps there is..just behind the scenes. And it is an investigation that can take years..unless you have a powerhouse team like Mueller’s that might shorten the time frame.
Personally, I think Clinton is too big to take down. It would take it all down from both sides.