((a))
((1)) Amounts allocated to a State shall be available for obligation by that State for a period of 3 years after the date of allocation.
((2)) Amounts allocated to a State that are not obligated at the end of the 3-year period referred to in paragraph (1) shall be withdrawn and allocated by the Secretary in addition to any other amounts available for allocation in the fiscal year in which they are withdrawn or the following fiscal year.
((b)) Amounts available to the Secretary for State recreational boating safety programs for a fiscal year that have not been allocated at the end of the fiscal year shall be allocated among States in the next fiscal year in addition to amounts otherwise available for allocation to States for that next fiscal year.