Here:
When you set minimum wage levels higher than many inexperienced young people are worth, they don't get hired. It is not rocket science.
Milton Friedman explained all this, half a century ago, in his popular little book for non-economists, "Capitalism and Freedom." So have many other people. If a presidential candidate who calls himself "conservative" has still not heard of these facts, that simply shows that you can call yourself anything you want to.