http://thehill.com/homenews/administration/399461-giuliani-collusion-is-not-a-crime
No, if he directly paid or instigated (colluded with?) someone to hack the servers and publish the emails that would be clearly ilegal.
Additionally, if he was involved in any way on it that could be proved somehow he would not only be a criminal but a stupid and a danger to be in charge of the US. I don't really think the guy is as much stupid and much less his advisors who, were they in any way involved in this issue, would have never even informed the guy about it.
I would be shocked if it could be proven that he was (legally) involved in the crime... if there was such a crime.
You have to admit, there might just be the tiniest possibility that he is that stupid. I can't see the 'smoking gun' evidence turning up anytime soon, too many people don't want the whole house of cards come tumbling down. But anything is possible. From impeachment, right through to him getting a second term. Biggest soap opera on the planet, the guy makes the news every time he gets up to pee in the night.
I don't know... the guy maybe mad, even insane... but... stupid? No, he is not. I am sure he is much less stupid that he does seem to be. It's all a pose and a farce that has worked amazingly well for him through his entire life.
And yes... (the status quo) that's another reason I don't think any evidence could see the light.
As I said, no matter what really happened, I would be fucking shocked if some clear evidence on his involvement on that issue would show up.
P.S.: Also when you have that kind of money and power you have access to top-notch advisors that can compensate for any mental disabilities the guy could have. Trump is Trump and his resources, the second being of utmost importance.