The question is no longer about collusion. It's about treason.
Problem, though:
http://www.nytimes.com/1861/01/25/news/treason-against-the-united-states.html?pagewanted=all
Treason has ever been deemed the highest crime which can be committed in civil society; since its aim is an overthrow of the Government and a public resistance by force of its just powers, its tendency is to create universal danger and alarm, and on this account it has often been visited with the deepest public resentment. Hence, by the common law, the the punishment of high treason was accompanied by all the refinements in cruelty which were oftentimes literally and studiously executed. But under the Constitution of the United States the power of punishing the crime of treason against the United States is exclusive in Congress; and the trial of the offence belongs exclusively to the Federal tribunals. A State cannot take cognizance or punish the offence, whatever it may do in relation to the offence of treason committed exclusively against itself.
It appears only the Federal Government can bring charges of Treason... and right now, the party guilty of treason is in control of said Federal Government...