447.61—Unlawful importation.
         Any person who willfully:
    
    
    
        
        (b) 
         Engages in the business of importing articles on the U.S. Munitions Import List without registering under this part; or
    
    
    Shall upon conviction be fined not more than $1,000,000 or imprisoned not more than 10 years, or both.