To continue on further, how they are coming up with $7/gallon is incorrect. They are insinuating that the price per pound paid for milk is the ONLY determining factor for how much we pay per gallon in the stores.
It isn't. All other input prices are staying the exact same (packaging, shipping, etc.), as well as the profit per gallon from the store's end not necessarily doubling from this.
So while the 1949 bill coming into effect would result in a significant price increase in milk, it will not likely result in a doubling of the price paid in stores per gallon of milk.
Money can't buy happiness. Just video games, which make me happy.