1.19—Exemptions and discretionary release.
        
        (a) 
         All agency records, except those specifically exempted from mandatory disclosure by one or more provisions of 5 U.S.C. 552(b), shall be made promptly available to any person submitting a request under this subpart.
    
    
        
        (b) 
         Agencies are authorized, in their sole discretion, to make discretionary releases when such release is not otherwise specifically prohibited by Executive Order, statute, or regulation.