Great comments Publius42. I had not heard that background about federal subsidies on the wheat case before. As we all know, once you accept money from Uncle Sam, he gets to make all the rules for you. Especially if he pays you to NOT do something and then you do it anyway.
Lesson learned: If the Feds offer subsidies to FFLs to not make certain firearms, DON'T! It's a trap! As is the Feds would ever pay an FFL a dime.