Here is an excellent analysis by Alberta's Child in post # 7.
"Her case against Lewandowski might now be in jeopardy under the common-law Doctrine of Unclean Hands (no pun intended). Under this doctrine, a plaintiff cannot pursue a legal case against someone else when it can be proven that the plaintiff has engaged in the same misconduct that is the basis of the complaint."
Doctrine of Unclean Hands - i learned something today!
A similar legal principle that might be more relevant is in pari delicto -- literally translated to "in equal fault." This basically means that a court will be reluctant to get involved in a legal case between two dirtbags or shady characters.