The tenth-circuit affirmed the denial of Ronnie Fuston’s federal habeas corpus petition, rejecting his claims that his conviction and death sentence violated constitutional rights. The court held that the Oklahoma Court of Criminal Appeals did not unreasonably apply clearly established Supreme Court law under the Antiterrorism and Effective Death Penalty Act (AEDPA), 28 U.S.C. § 2254(d)(1). Regarding Fuston’s claim under *Beck v. Alabama*, 447 U.S. 625 (1980), which requires a lesser-included offense instruction in capital cases when the evidence supports it, the court found that the state court reasonably determined the evidence did not permit a rational juror to find Fuston guilty of second-degree murder while acquitting him of first-degree murder. The court noted that uncontroverted testimony indicated Fuston shot the victim four times after seeing the victim move, demonstrating an intent to kill rather than a depraved mind without premeditation. Consequently, the state court’s denial of the instruction was not an unreasonable application of *Beck*. Regarding Fuston’s claim under *Atkins v. Virginia*, 536 U.S. 304 (2002), which prohibits executing intellectually disabled defendants, the court addressed whether Fuston was entitled to an evidentiary hearing despite presenting multiple IQ scores, including one of 81. The court concluded that Supreme Court precedent in *Atkins*, *Hall v. Florida*, *Moore v. Texas*, and *Brumfield v. Cain* did not clearly establish that a defendant with at least one IQ score above the standard error of measurement (SEM) threshold must receive a hearing when other scores fall below it. Because the law was not clearly established, the state court’s reliance on Oklahoma law, which deems an IQ score of 76 or above conclusive evidence against intellectual disability, did not involve an unreasonable application of federal law. As a practical consequence, Fuston’s death sentence remains in effect, and the district court’s denial of his habeas petition stands. The appellate court granted a certificate of appealability on both issues but ultimately ruled against the petitioner on the merits of each claim.