8 CFR § 1239.2 - Cancellation of notice to appear.
(a) Prior to commencement of proceedings. For provisions relating to the authority of an immigration officer to cancel a notice to appear prior to the vesting of jurisdiction with the immigration judge, see 8 CFR 239.2(a) and (b).
(c) Motion to dismiss. After commencement of proceedings pursuant to 8 CFR 1003.14, government counsel or an officer enumerated in 8 CFR 239.1(a) may move for dismissal of the matter on the grounds set out under 8 CFR 239.2(a). Dismissal of the matter shall be without prejudice to the alien or the Department of Homeland Security.
(d) Motion for remand. After commencement of the hearing, government counsel or an officer enumerated in 8 CFR 239.1(a) may move for remand of the matter to the Department of Homeland Security on the ground that the foreign relations of the United States are involved and require further consideration. Remand of the matter shall be without prejudice to the alien or the Department of Homeland Security.
(e) Warrant of arrest. When a notice to appear is canceled or proceedings are terminated under this section any outstanding warrant of arrest is canceled.
(f) Termination of removal proceedings by immigration judge. An immigration judge may terminate removal proceedings to permit the alien to proceed to a final hearing on a pending application or petition for naturalization when the alien has established prima facie eligibility for naturalization and the matter involves exceptionally appealing or humanitarian factors; in every other case, the removal hearing shall be completed as promptly as possible notwithstanding the pendency of an application for naturalization during any state of the proceedings.