Does the admission of a non-testifying co-defendant's plea agreement implicating the defendant violate the Confrontation Clause?

QUESTIONS PRESENTED FOR REVIEW 1. Does the admission into evidence of a non-testifying co-defendant’s plea agreement which includes a statement implicating the defendant on trial as a co-conspirator violate the Confrontation Clause of the United States Constitution? IL. If a criminal defendant argues at trial that a co-defendant was the perpetrator of the charged offense rather than herself, does that defense constitute invited error which allows the government to introduce the co-defendant’s plea agreement implicating the defendant without a Confrontation Clause infringement? i