Clark v. Bisignano — Fifth Circuit upheld denial of Social Security benefits after finding Clark forfeited her arguments

Case
Tykita Clark v. Frank Bisignano, Commissioner of Social Security Administration
Court
U.S. Court of Appeals for the Fifth Circuit
Judge
Willett; Duncan; Engelhardt
Date Decided
October 5, 2026
Docket No.
26-30270
Topics
Social Security; Appellate Procedure; Forfeiture; Substantial Evidence
Source
Read the full opinion

Background

Tykita Clark, proceeding pro se, appealed a district court judgment affirming the Social Security Administration’s denial of her claim for benefits. She presented multiple arguments challenging the district court’s conclusion that substantial evidence supported the Commissioner’s final decision.

The Fifth Circuit reviews a denial of Social Security benefits to determine whether substantial evidence supports the final decision and whether the Commissioner applied the proper legal standards. Under that deferential review, the court does not reweigh the evidence or substitute its judgment for the Commissioner’s when credible evidentiary choices or medical findings support the agency’s decision.

The Court’s Holding

The Fifth Circuit held that Clark forfeited her appellate arguments through inadequate briefing. Her principal brief contained neither record citations nor citations to legal authorities supporting her arguments, as required by Federal Rule of Appellate Procedure 28 and the Fifth Circuit’s rules. Although courts construe pro se briefs liberally, pro se litigants must still brief their issues and reasonably comply with appellate briefing requirements.

Clark’s inclusion of record and authority citations in her reply brief did not cure the deficiencies because an appellant may not adequately develop an argument for the first time in reply. The court nevertheless reviewed the appellate record, the parties’ briefs, and the applicable law and concluded that the Commissioner used the proper legal standards and that substantial evidence supported the findings. It therefore affirmed the district court’s judgment.

Key Takeaways

  • A pro se Social Security claimant must support appellate arguments with pertinent legal authority and citations to the record.
  • Arguments inadequately presented in an opening brief may be forfeited, and developing them in a reply brief does not cure the defect.
  • The Fifth Circuit independently found that the Commissioner applied the proper legal standards and that substantial evidence supported the agency’s findings.

Why It Matters

The opinion underscores that liberal construction of pro se filings does not excuse compliance with the core requirements of appellate briefing. Social Security appellants must connect each claimed error to supporting authority and specific portions of the record in their opening briefs.

It also illustrates the narrow scope of judicial review in benefits cases: supported agency fact findings are conclusive, and appellate courts will not reweigh conflicting evidence or substitute their judgment for the Commissioner’s.

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