I don't think most people arguing against free lunches really understand how much how much the USDA already subsidizes via the National School Lunch Program and their commodity distribution program, and what the full intent and benefits are.
Without saying too much about myself, I've been working in the midst of this field for a decade and a half, with people all the way from the USDA and various state Departments of Ag./Education down to individual school district Foodservice Directors. I've seen exactly how this particular program works. What the Reps and especially rural voters need to know is that these subsidies were originally created for farmers' benefit, and they are still seeing those benefits.
The way this particular program woks is that the USDA does some clever forecasting to come up with an
average price for a specified list of food commodities (e.g. chicken, potatoes, cheese) for the upcoming school year. To greatly simplify, this is basically setting a guaranteed price that the US Government will buy up a bunch of that commodity, which they in turn "donate" to states for distribution to the schools. (Now, it gets really complicated in that a lot of the pounds of food actually go to manufacturers for processing first, but that's beyond the scope of the discussion).
The idea is to even out dips in the market that could wipe out farmers in bad years; it's a straight up Farm Subsidy. The secondary benefit is that the schools get free or discounted food for the kids. It's a win-win.
If you can't tell, I'm in favor of expanding the investment in the USDA Foods commodity distribution program. Yes, it has inefficiencies that I've seen personally, but overall it does good things, and, with better messaging, could be a way to convince the Right that feeding the kids is good for everyone, them included.
"Feed the kids and stabilize our family farms!"