United States v. Browning, No. 10-7059 (4th Cir. Oct. 22, 2010):
A United States magistrate judge only has the authority to enter a final, appealable order on the consent of all parties. 28 U.S.C. § 636(c). When such consent does not exist, a magistrate judge lacks authority to enter a final dispositive order; a district court must review the magistrate judge’s order or proposed findings and make a ruling. Otherwise, such non-consented dispositive order is subject to remand.