50 U.S.C. § 2651 - Prohibition on international inspections of Department of Energy facilities unless protection of restricted data is certified

(a) Prohibition on inspections 
The Secretary of Energy may not allow an inspection of a nuclear weapons facility by the International Atomic Energy Agency until the Secretary certifies to Congress that no restricted data will be revealed during such inspection.

(b) Omitted 

(c) Restricted data defined 
In this section, the term restricted data has the meaning provided by section 2014 (y) of title 42.