LEONARD T. STRAND, Chief District Judge.
On October 18, 2017, a five-count indictment was filed against defendant. On February 6, 2018, defendant appeared before the Honorable C.J. Williams, Chief United States Magistrate Judge, and entered a plea of guilty to Count 1 of the indictment. On February 7, 2018, Judge Williams filed a Report and Recommendation (R&R) in which he recommended that defendant's guilty plea be accepted. Doc. No. 25. No objections to the R&R were filed. I therefore undertake the necessary review of Judge Williams' recommendation to accept defendant's plea in this case.
A district judge must review a magistrate judge's R&R in a criminal case under the following standards:
28 U.S.C. § 636(b)(1); see also Fed. R. Crim. P. 59(b). Thus, when a party objects to any portion of an R&R, the district judge must undertake a de novo review of that portion.
Any portions of an R&R to which no objections have been made must be reviewed under at least a "clearly erroneous" standard. See, e.g., Grinder v. Gammon, 73 F.3d 793, 795 (8th Cir. 1996) (noting that when no objections are filed "[the district court judge] would only have to review the findings of the magistrate judge for clear error"). As the Supreme Court has explained, "[a] finding is `clearly erroneous' when although there is evidence to support it, the reviewing court on the entire evidence is left with the definite and firm conviction that a mistake has been committed." Anderson v. City of Bessemer City, 470 U.S. 564, 573-74 (1985) (quoting United States v. U.S. Gypsum Co., 333 U.S. 364, 395 (1948)). However, a district judge may elect to review an R&R under a more-exacting standard even if no objections are filed:
Any party that desires plenary consideration by the Article III judge of any issue need only ask. Moreover, while the statute does not require the judge to review an issue de novo if no objections are filed, it does not preclude further review by the district judge, sua sponte or at the request of a party, under a de novo or any other standard.
Thomas v. Arn, 474 U.S. 140, 150 (1985).
Because neither party objects to the R&R, I have reviewed it for clear error. Based on that review, I am not "left with the definite and firm conviction that a mistake has been committed." Anderson, 470 U.S. at 573-74. As such, I hereby