What makes entrapment straddle the lines between criminal law and criminal procedure?

Entrapment straddles the lines between criminal law and criminal procedure because it involves the actions of law enforcement in inducing someone to commit a crime. It is a defense in criminal law, asserting that the individual would not have committed the crime if not for the actions of law enforcement. The defense of entrapment can impact the fairness of criminal proceedings, raising questions about due process and police conduct.