No they don't. Otherwise they would be anxious and eager to get rid of Depression era laws. That would also allow one set of rules for everyone...
The depression has been gone 70 years, Mr. Marsh.
No one bothered to tell you?
But what would we do if the milk supply suddenly became unsteady? Another depression I'm sure....lol The only ones who need milk regularly for certain are baby calfs. The rest of us can live without it from time to time and be no worse for the wear.