
Glad to do so. Let's hop in the way-back machine and see what those early proponents of the Minimum Wage were trying to do:
The problem, you see, was that those daggum ole Free Market Business People were doing the wrong thing. Specifically, they were hiring blacks. The original controversy over the minimum wage centered on what to do about what Sidney Webb called the "unemployable class." By which he meant "negroes" and (and, this has always been one of my favorite Progressive phrasings) "the Mongrelized Asian Hordes". It was Webb's belief, shared by many of the progressive economists affiliated with the American Economic Association, that establishing a minimum wage above the value of the "unemployables" worth would lock them out of the market, accelerating their elimination as a class. "Of all ways of dealing with these unfortunate parasites," Webb observed, "the most ruinous to the community is to allow them unrestrainedly to compete as wage earners."
Sociologist E. A. Ross put it succinctly: "The Coolie cannot outdo the American, but he can underlive him." Since the inferior races were content to live closer to a filthy state of nature than the Nordic man, the savages did not require a civilized wage. Hence if you raised minimum wages to a civilized level, employers wouldn't hire such miscreants in preference to "fitter" specimens, making them less likely to reproduce and, if necessary, easier targets for forced sterilization. Royal Meeker, a Princeton economist and adviser to Woodrow Wilson, explained: "Better that the state should support the inefficient wholly and prevent the multiplication of the breed than subsidize incompetence and unthrift, enabling them to bring forth more of their kind."
We got the Davis-Bacon Act for the same reason. Darn ole blacks and immigrants were getting jobs when Decent White People' weren't. So, you raise the barrier for entry into the market, knowing that you'll price out many of the "undesirables".