Manchame-Guerra v. State, 178 A.3d 1

In July 2012 Rudy Manchame-Guerra was charged with murder; at his April 2015 trial the jury acquitted him of first-degree murder but convicted him of second-degree murder and related offenses.
The State’s key eyewitness, Edi Felipe, testified he saw Petitioner shoot the victim; at the time of his testimony Felipe had pending Prince George’s County charges (burglary, theft, concealed weapon) indicted in October 2013 and still unresolved in April 2015.
Defense counsel sought to cross-examine Felipe under Md. Rule 5-616(a)(4) about whether he expected a benefit from prosecutors in return for his testimony; the trial court excluded that line of questioning.
Defense proffer to the court included: the specific pending charges in Prince George’s County, that Felipe was first interviewed by Detective Rodriguez in December 2013 after indictment, and that Rodriguez knew of Felipe’s pending charges when he interviewed him.
The Court of Special Appeals affirmed, holding the proffer was insufficient under Peterson v. State; the Court of Appeals granted certiorari to resolve whether the proffer met the factual foundation required to ask about expectation of benefit.

Issue	Petitioner’s Argument	State’s Argument	Held
Whether Peterson lowered the factual-proffer threshold for questioning a witness about an expectation of benefit under Md. Rule 5-616(a)(4)	Peterson did not alter the settled test; pending charges may contribute to foundation when combined with circumstantial facts	Peterson should be followed: pending charges alone are insufficient; more is required	Peterson did not change the standard; it clarified that mere mention of pending charges in a vacuum is inadequate
Whether the trial court erred in barring cross-examination of Felipe about his subjective expectation of benefit where defense proffered specific pending charges in same county, timing of indictment, and detective’s knowledge	Proffer provided circumstantial evidence (same-county charges, timing, detective’s knowledge, charges still pending) sufficient to permit the expectation-of-benefit question	Proffer was insufficient to show an expectation of benefit; trial court properly exercised discretion to limit cross-examination	Court held the proffer was sufficient; exclusion violated Confrontation/Rule 5-616(a)(4); conviction vacated and new trial ordered

Calloway v. State, 414 Md. 616 (2010) (circumstantial evidence of benefit can justify questioning a witness about expectation of leniency)
Martinez v. State, 416 Md. 418 (2010) (dismissal or recent favorable action on unrelated charges can supply factual foundation for bias inquiry)
Dionas v. State, 436 Md. 97 (2013) (trial court error to bar inquiry into witness’s expectation of benefit; harmlessness review required)
Peterson v. State, 444 Md. 105 (2015) (pending charges alone are not a sufficient predicate; some additional circumstantial evidence is required)
Smallwood v. State, 320 Md. 300 (1990) (defendant must be given wide latitude to cross-examine for bias; trial court may control mode/order of questioning)
Delaware v. Van Arsdall, 475 U.S. 673 (1986) (Confrontation Clause requires a threshold level of inquiry into witness credibility)