ORDER
THIS MATTER is before the Courtin order to determine certain issues. First, should the Court or jury resolve the claim that the Defendant is mentally retarded, and when should that claim be decided? Second, what burden of proof should the Defendant bear in оrder to show he is mentally retarded? Oral argument oc *1240 curred on December 8, 2005, and the parties have filed legal authority related to these issues. As explained more fully below, I conclude the Court should determine whether the Defendant is mentally retarded before trial, and that the Defendant bears the burden of establishing that he is mentally retarded by a preponderance of the evidence.
I. ANALYSIS
By way of background, the Federal Death Penalty Aсt [“FDPA”] states in a statute called “implementation of a sentence of death” that “[a] sentence of death shall not be carried out upon a person who is mentally retarded. Specifically, a sentence of death shall not be carried out upon a person who, as a result of mental disability, lacks the mental capacity to understand the death penalty and why it was imposed on that person.” 18 U.S.C. § 3596(c). The Supreme Court in
Atkins v. Virginia,
Based on the foregoing impairments associated with mental retardation, the Supreme Court found two reasons for excluding the mentally retarded from execution.
Id.
at 318,
While both the FDPA and
Atkins
prohibit the execution of mentally retarded individuals, neither the statutes nor the Supremе Court established procedures to carry out that mandate. Specifically,
Atkins
did not address the procedural issues before the Court, but left “ ‘to the states[s] the task of developing appropriate ways to enforce the constitutional restriction upon [their] execution of sentences.’ ”
Atkins v. Virginia,
A. The Court should Determine if the Defendant is Mentally Retarded.
The Defendant contends that Atkins prohibits both the implementation and the imposition of a death sentence. (Def.’s Reply ¶ 3.) The Defendant further argues that the Court should determine this issue prior to trial, “so the court and parties will know whether the case will *1241 continue as a capital case.” Id. The Government does not take a position on this issue.
Although the Supreme Court and the Tenth Circuit have not ruled on these issues, other circuits and states have addressed them. Following the Supreme Court’s holdings in
Apprendi v. New Jersey,
Moreover, other state courts have echoed the Fifth Circuit and decided that this issue is to be determined by the court before trial. In
State v. Williams,
Additionally, many state legislatures have adopted prоcedures allowing the court to determine this issue. Specifically, “17 of the 18 states which had procedures in place to address mental retardation pri- or to
Atkins
either require or authorize the trial court to determine mental retardation.”
United States v. Nelson,
B. Preponderance of the Evidence is the Appropriate Burden of Proof
The Government argues that the Defendant be required to prove he is mentally retarded by clear and convincing evidencе. First, the Government contends that the issue of mental retardation is comparable to the defense of insanity because both render a defendant ineligible for the death penalty. (Gov’t’s Supplemental Authority at 4.) The Govеrnment cites both statutory and case law supporting the notion that a defendant is required to prove an insanity defense by clear and convincing evidence.
See Ford v. Wainwright,
Second, the Government asserts that the Defendant should have a higher burden of proof on the issue of mental retardation because of the nature of the disability. (Gov’t.’s Supplemental Authority аt 5.) The Government argues that mental retardation is diagnosed and becomes apparent by the age of 18 while mental illness is more difficult to diagnose. Further, “[cjompe-tency involves the existence of a ‘mental diseаse or defect,’ which necessarily requires complicated diagnoses because mental illness is part of the definition.” (Gov’t-’s Supplemental Authority at 6; (quoting 18 U.S.C. § 4241 et seq.)). Therefore, because it is argued that mental retardation is distinguishable from incompetence and less risky to diagnose, a higher burden of proof is appropriate in proving mental retardation.
While the Defendant concedes he has the burden of proving he is mentally retarded, he argues that his burden of proof should be by a preponderance of the evidence. (Def.’s Supplemental Br. at 12.) Defendant asserts that under statutory law, since federal courts are to decide matters cоncerning mental illness and competency by a preponderance of the evidence pursuant to 18 U.S.C. § 4241, the same should be applied to matters involving mental retardation. Defendant cites both state and federаl
post-Atkins
cases for support. First, in
Williams,
Under
Cooper,
the Supreme Court struck down a state law requiring a defen
*1243
dant to prove his competency by clear and convincing evidence. The Court found that such a high burden violates due process and threatens the fundamental right to a fair trial.
Id.
at 363,
Although there is no controlling Tenth Circuit case law on this issue, I find Defendant’s argument and the authority on competency to be persuasive. I disagree with the Government’s argument that this issue is analogous to the insanity defense. Insanity is an affirmative defense, which must be proved by clear and convincing evidence. I find that a pre-trial determination of mеntal retardation is more comparable to a pre-trial determination of competency. As such, a clear and convincing burden of proof is too high, and the risk of error is much less for the Government than the Defеndant. Therefore, the Defendant should have the lower burden of proof in establishing mental retardation. Accordingly, it is
ORDERED that the Court will determine whether the Defendant is mentally retarded prior to trial. It is
FURTHER ORDERED that the Defendant shall prove his mental retardation by a preponderance of the evidence.
Notes
. Under
Apprendi,
“any fact that increases the penalty for a crime beyond the prescribed statutory maximum must be submitted to a jury, and proved beyond a reasonable doubt.”
Id.
at 490,
. (citing Ariz. Rev. Stat. § 13-703.02; Colo. Rev. Stat. § 18-1.3-1102; iND.Code §§ 35-36-9-5; Ky. Rev. Stat. §§ 532.135; S.D. Codified Laws §§ 23A-27A; Mo. Stat. § 565.030; N.C. Gen. Stat. § 15A-2005; N.Y.Crim. Proc. Law § 400.27; Kan. Stat. Ann. § 21-4623; Neb. Rev. Stat. § 28-105.01; N.M. Stat. § 31-20A-2.1; Conn. Gen. Stat § 53a-46a; Md. Code Ann., Crim. Law §§ 2-202,-303; Fla. Stat. § 921.137; Wash. Rev. Code Ann. § 10.95.030).
. (citing Idaho Code § 19-2515A; Utah Code Ann. §§ 77-15a-101 to 106, 77-18a-l; Nev. Rev. Stat. 174,175-554,177.015,177.055, 200.030; La. Code. Crim. Proc. Ann. Art. 905.5.1; Del Code Ann. tit. 11, § 4209; III. Comp. Stat 5/114-115; Cal. Penal Code § 1376).
.
Chase,
