I stumbled across a fruitful blog post that touched on the relationship between minimum wages - along with the wages of low income workers in general - and the ability of workers to collect their strength under the heading of a union.
Perhaps the problems faced by low income workers are better served by allowing them to unionize than to simply increase the minimum wage. Something for M3's to consider as you put your papers together.
I'll post a few separate items based on the links in the story above.