Background
Raymond Mata, Jr. was convicted of first degree murder and kidnapping for the killing of Adam Gomez, a three-year-old boy. A three-judge panel sentenced Mata to death. Following a resentencing proceeding required by Ring v. Arizona, a jury again found an aggravating circumstance — exceptional depravity — and a panel reimposed the death sentence. Throughout the trial and appellate proceedings from 1999 to 2008, Mata was represented by the Nebraska Commission on Public Advocacy (NCPA), with attorneys Jeffery Pickens and Jerry Soucie as primary counsel and James Mowbray as chief counsel.
Mata filed an initial pro se motion for postconviction relief in 2009. On remand after a prior appeal, the Scotts Bluff County public defender’s office — and ultimately public defender Bernard Straetker personally — filed amended postconviction motions on Mata’s behalf. The district court denied that motion without an evidentiary hearing, and the Nebraska Supreme Court affirmed in 2019. In 2021, represented by new counsel, Mata filed a 282-page successive postconviction motion raising 28 claims. He relied on State v. Williams, arguing that Straetker’s alleged conflicts of interest — arising from his prior service as an NCPA commissioner and other connections — and Pickens’ alleged conflicts prevented his initial postconviction counsel from raising meritorious claims, making the successive motion his first meaningful opportunity to do so.
The district court held an evidentiary hearing limited to the conflict-of-interest question. Evidence was presented about Pickens’ prior prosecution of Mata and family members while employed at the Scotts Bluff County Attorney’s office, Pickens’ prior representation of the victim’s grandfather, Straetker’s prior service as an NCPA commissioner with oversight responsibilities over NCPA chief counsel, Straetker’s undisclosed 2000 representation of the victim’s grandfather, and the general relationship between NCPA commissioners and the attorneys they oversaw. The district court found no actual conflict on Straetker’s part, found that Mata had waived any conflict arising from Pickens’ prior prosecutions, and dismissed the successive motion as procedurally barred.
The Court’s Holding
The Nebraska Supreme Court affirmed the district court’s dismissal of Mata’s successive postconviction motion as procedurally barred. The court found that any evidentiary error in excluding Mata’s proposed exhibits was harmless because the excluded evidence was cumulative of other properly admitted evidence — including the depositions and declarations of Straetker, Pickens, Mowbray, and former commissioner Lindemeier — that already addressed the alleged conflicts. Exclusion of cumulative evidence does not require reversal under Nebraska law.
On the central issue, the court rejected Mata’s attempt to bring the case within the Williams exception. To escape the procedural bar on a successive postconviction motion, a defendant must show that an actual — not speculative or hypothetical — conflict of interest adversely affected postconviction counsel’s performance. The court upheld the district court’s factual finding that Straetker had no actual conflict. The evidence showed that NCPA commissioners had no involvement in individual case decisions, lacked access to attorneys’ files or strategy, and received only publicly available information about cases. Straetker served as commissioner before the resentencing proceeding and was not appointed as postconviction counsel until years after both his service and Mata’s resentencing concluded. Though witnesses agreed that former commissioners should generally avoid postconviction appointments in former NCPA cases — and Straetker himself briefly raised the concern with Mata — the record did not establish that Straetker’s commission service created an actual conflict that detracted from his representation.
As to Pickens, the court affirmed the district court’s finding that Mata had waived any conflict arising from Pickens’ prior prosecution of him and his family members. Both Pickens and Mowbray testified that Mata was advised of the potential conflict and confirmed he was comfortable with Pickens representing him. Because no actual, unwaived conflict was established for either attorney, Mata could not invoke Williams to excuse the procedural default, and his successive motion raising claims available since his direct appeal or initial postconviction proceeding was properly dismissed.
Key Takeaways
- A successive postconviction motion is not saved from procedural bar under State v. Williams unless the defendant demonstrates an actual conflict of interest — not a speculative or hypothetical one — that adversely affected initial postconviction counsel’s performance and resulted in conduct detrimental to the defense.
- A former NCPA commissioner who later serves as postconviction counsel for a former NCPA client does not automatically have a conflict of interest; the analysis turns on whether the commissioner had actual involvement in or confidential information about the underlying case, not merely an oversight or governance role over the agency.
- A defendant who knowingly waives a defense attorney’s conflict of interest cannot later invoke that conflict as grounds to excuse a procedural default in postconviction proceedings.
- Exclusion of evidence is harmless error when other admitted evidence already establishes the same points, even in a capital postconviction proceeding with high constitutional stakes.
- Nebraska’s finality principle under Neb. Rev. Stat. § 29-3001(3) requires defendants to raise all available grounds for relief in their initial postconviction motion; claims available at that time cannot anchor a successive motion absent a showing the basis was not then available.
Why It Matters
This decision reinforces the narrow scope of Nebraska’s Williams exception to postconviction procedural bars. Defense practitioners handling initial postconviction motions bear the critical burden of identifying and raising all available claims, because structural conflicts in prior counsel’s representation — even ones later acknowledged by the attorneys themselves as raising concerns — will not excuse default unless they rose to the level of an actual, demonstrable conflict that shaped the litigation strategy against the defendant’s interests. The ruling makes clear that governance-level relationships between an attorney and a prior agency, without direct case involvement, are insufficient.
For capital defense and public defender systems more broadly, the case flags a recurring institutional tension: when former oversight officials later represent clients of the entity they supervised, an appearance of conflict may exist — and witnesses here agreed such appointments are inadvisable — yet that appearance alone does not satisfy the constitutional standard for reversal. This gap between professional norms counseling avoidance and the legal standard for relief may warrant greater attention to prophylactic conflict screening in state indigent defense structures.