Now, I personally think all mandatory minimums are unnecessary (and unwise and unjust), but some have the added bonus of being outdated.
Cruise-takers and spitoon-buyers, beware. You are now on notice that 19 U.S.C. § 283 is out there. If you don't want to spend three months in a federal prison, listen to your wife and put the spitoon back on the shelf, or just declare the stupid thing when you make port.