10th Cir.

UNITED STATES OF AMERICA v. JOYCELINE MWANGI

March 31, 2026 ·4:25-CR-00200-GKF-1 ·Panel Decision · By James Taylor

The Tenth Circuit enforced an appeal waiver in a criminal case where the defendant argued she did not fully understand the consequences of waiving her right to appeal. The court dismissed the appeal and granted counsel's request to withdraw after finding no non-frivolous basis to oppose the government's motion.

Background

Joyceline Mwangi pled guilty to misprision of felony pursuant to a plea agreement. The district court sentenced her to two years’ probation and ordered her to pay seventy thousand dollars in restitution. Ms. Mwangi filed a notice of appeal, and the government moved to enforce the appeal waiver in her plea agreement.

The court’s reasoning

The court applied the three-part test from United States v. Hahn to determine whether to enforce the appeal waiver. The court examined the proceedings, including the plea agreement, the plea colloquy, and the defendant’s pro se response. The court found that the appeal fell within the waiver’s scope, the waiver was knowing and voluntary, and enforcing it would not result in a miscarriage of justice. The court agreed there was no non-frivolous basis to oppose the government’s motion.

What it means going forward

The defendant’s appeal is dismissed, and her appointed counsel is relieved of representation.