Idaho Code § 32-612
Collusion is an agreement between husband and wife that one of them shall commit, or appear to have committed, or to be represented in court as having committed, acts constituting a cause of divorce for the purpose of enabling the other to obtain a divorce, and is a bar to an action for such acts.
[(32-612) R.S., sec. 2465; reen. R.C. & C.L., sec. 2655; C.S., sec. 4635; I.C.A., sec. 31-611.]