It's not illegal for me to serve people food with peanuts. It is illegal for me to serve peanuts to someone that is allergic with the intent to cause them harm.

It's not illegal for me to serve people food with peanuts. It is illegal for me to serve peanuts to someone that is allergic with the intent to cause them harm. There is no "slippery slope" that serving peanuts to anyone will become illegal.