Margarine laws and other stuff.
Amazing to hear that "the land of the free" had/has laws forcing consumers towards butter from margarine.
In Australia until some time in the 1970s or 1980s, some states had restrictions on the use of the word "butter" for non-dairy items. I remember when my family travelled up to Queensland in about 1970 or 71 to visit relatives, once across the border, "peanut butter" became "peanut paste." I think Western Australia had the same silly laws. I don't know when they were repealed.
We still have regular squawking from the dairy industry about the use of the word "milk" in soy milk, almond milk and so on. Their lobbyists claim that people get confused or tricked into buying these alternatives to dairy milk. What a lot of nonsense!
I love the taste of dairy products but they no longer agree with me. I have an auto-immune condition and if I have some dairy products I get health problems. I have adapted and use rice milk on cereal or muesli, and almond milk in coffee. I am not "confused." I can't eat cheese from cows milk but sheeps milk feta is fine, and delicious. I have switched from butter to Nuttelex, a premium margarine with somewhat healthier ingredients and no dyes. My partner was always a butter lover but he has switched to Nuttelex since the price of butter doubled overnight about 2 years ago. We jokingly call it "sandwich grease." He says he lost some weight with the switch, too. He still occasionally has a little butter as a treat, it definitely tastes better. I use olive oil or butter in cooking, butter makes great cakes although I have a lovely carrot cake recipe that uses extra virgin olive oil...Yum.