18 U.S.C. § 3565 - U.S. Code - Unannotated Title 18. Crimes and Criminal Procedure § 3565. Revocation of probation

(a) Continuation or revocation.--If the defendant violates a condition of probation at any time prior to the expiration or termination of the term of probation, the court may, after a hearing pursuant to Rule 32.1 of the Federal Rules of Criminal Procedure, and after considering the factors set forth in section 3553(a) to the extent that they are applicable--

(b) Mandatory revocation for possession of controlled substance or firearm or refusal to comply with drug testing.--If the defendant--

the court shall revoke the sentence of probation and resentence the defendant under subchapter A to a sentence that includes a term of imprisonment.

(c) Delayed revocation.--The power of the court to revoke a sentence of probation for violation of a condition of probation, and to impose another sentence, extends beyond the expiration of the term of probation for any period reasonably necessary for the adjudication of matters arising before its expiration if, prior to its expiration, a warrant or summons has been issued on the basis of an allegation of such a violation.