42 U.S. Code § 16915 - Duration of registration requirement
(a) Full registration period
A sex offender shall keep the registration current for the full registration period (excluding any time the sex offender is in custody or civilly committed) unless the offender is allowed a reduction under subsection (b). The full registration period is—
(b) Reduced period for clean record
(1) Clean record
The full registration period shall be reduced as described in paragraph (3) for a sex offender who maintains a clean record for the period described in paragraph (2) by—
(D) successfully completing of  an appropriate sex offender treatment program certified by a jurisdiction or by the Attorney General.
In the case of—
(A) a tier I sex offender, the period during which the clean record shall be maintained is 10 years; and
 So in original. The word “of” probably should not appear.
Source(Pub. L. 109–248, title I, § 115,July 27, 2006, 120 Stat. 595.)
References in Text
This subchapter, referred to in subsec. (b)(2)(B), was in the original “this title”, meaning title I of Pub. L. 109–248, July 27, 2006, 120 Stat. 590, known as the Sex Offender Registration and Notification Act. For complete classification of title I to the Code, see Short Title note set out under section 16901 of this title and Tables.