34 U.S.C. § 20926
Period for implementation by jurisdictions
(a) Deadline
Each jurisdiction shall implement this subchapter before the later of—
(1)
3 years after July 27, 2006 ; and
(2)
1 year after the date on which the software described in section 20925 of this title is available.
(b) Extensions
The Attorney General may authorize up to two 1-year extensions of the deadline.
( Pub. L. 109–248, title I, § 124 , July 27, 2006 , 120 Stat. 598 .)