All 50 states have accepted the 2009 American Recovery and Reinvestment Act (ARRA) funding that requires states to approve a residential energy code that meets, exceeds, or is equivalent to the 2009 IECC, and all are developing plans to achieve 90% compliance by 2017.
The key words to meeting this ARRA requirement are energy savings. NAHB amendments offer energy savings that are equal to, or can exceed, the 2009 IECC.
It’s important also that your state understands that even as new model codes are introduced, the ARRA requirements do not change: the baseline is still the 2009 IECC.
These documents can help you explain how ARRA works and why codes do not need to become even more stringent for states to remain eligible.