What if Walmart paid employees enough to avoid food stamps?

I enjoyed this video for sharp writing, clarity of data presentation, and measured tone.

While still relying on economic markets for a thriving food economy, we nonetheless can expect our major grocery chains to do better on wages. No matter what one thinks of the proposed federal minimum wage increase, it is clear that the nation's leading employers should face binding social norms that constrain them to pay wages that reach a certain threshold.

What should the threshold be? It is possible that some threshold would be too high, counter-productively putting grocery companies out of business. But, this video focuses on a much more humble and minimal threshold. At the very least, major grocery chains should pay wages sufficiently high to keep workers off the Supplemental Nutrition Assistance Program (SNAP) rolls.