LAST EDITED ON May-18-17 AT 11:22AM (MST)[p]Evidence would not be disclosed at this juncture given the nature of how investigations are conducted. Until impeachment proceeding occur, much like with Nixon we the people will not be privy to any evidence.
It reminds of me of the famous Rumsfeld quote...
"There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know.
We know Manafort and Flynn violated the FARA act by not disclosing and registering as foreign agents. We know the AG Session misled the congress over his contacts with the Kislyak, hence he has recused himself from the FBI investigation. We know that Flynn discussed US policy without authorization over sanctions with Kislyak. We know that Trump sold a property for an unrealistic price given market values to a Russian with direct ties to Putin. We know that Trump has refused to release his taxes or make his business dealing transparent to exonerate himself.
There is even more to add to this but for the sake of brevity these a few things that we the public now know.