2008—Subsec. (b)(3)(C). Pub. L. 110–387 struck out closing parenthesis after “disabilities”.

2006—Subsec. (b)(5), (6). Pub. L. 109–461 added par. (5) and redesignated former par. (5) as (6).

2003—Subsec. (a). Pub. L. 108–170 substituted “June 15 of each year” for “April 15 of each year”.