There is nothing riskier for a political leader than doing something. Someone is sure to jump all over the politician who actually takes a stand.
Following the expression "Any port in a storm." finds politicians looking for excuses.
The most convenient and time-proven excuse is the fact that farmers won't get together and speak with a single voice.
Imagine no speed limits unless everyone agrees upon what the exact amount should be. There is no way dairy farmers throughout the country will agree on issues.
The very least leaders could do is to initiate a discussion. For instance, what are the implications of the store-brand butter in my town coming from Tulare, California?
One obvious point is there is not enough extra local cream to make butter.