It's difficult to enact the programs because people disagree on how they are run. All students or some students? What's the bar on the latter? How is it funded?

It's difficult to enact the programs because people disagree on how they are run. All students or some students? What's the bar on the latter? How is it funded? Should it be a federally organized program or should the states lead how they do their own? Should it come with a mandate of food healthiness, what's that bar if so? Is it a school only supplemental program or should it be a change to a general welfare program (the latter having a whole set of debate how it should be done if its own)? Very low on the list of reasons it's difficult is the percentage of those just plain not interested in the idea. It may seem silly ("we all agree no kid should go hungry at school so why haven't we done it universally") but picking that one reason out of the hat and holding it out as why isn't helping anything.