Whoever willfully violates, attempts to violate, or conspires to violate, any provision of sections ^[1] 2077 or 2131 of this title, or whoever unlawfully interferes, attempts to interfere, or conspires to interfere with any recapture or entry under section 2138 of this title, shall, upon conviction thereof, be punished by a fine of not more than $10,000 or by imprisonment for not more than ten years, or both, except that whoever commits such an offense with intent to injure the United States or with intent to secure an advantage to any foreign nation shall, upon conviction thereof, be punished by imprisonment for life, or by imprisonment for any term of years or a fine of not more than $20,000 or both.