This is a good post, also it makes me think of how often food becomes some sort of cultural talking point too. Conservatives talk about being shamed for eating burgers, the youth is poor because of avocado toast.
I think one of the biggest things to encourage better treatment for immigrants in the US is just a reminder that the US agricultural system would collapse if we suddenly deported all undocumented immigrants. Even the most rabid conservative has to admit he would pay more for food if he kicked out the people who bring it to him.