The thing that bothers me about minimum wage going up is that it may raise the wages for those working at low wages, but it does nothing for those that may be working at just above minimum, or higher.
An example is the last time that they raised minimum to $7.25. My wife was hired at $7.25 per hour before the minimum wage was raised to that. She worked for 3 or 4 years at that rate. Then the minimum wage got changed. Now she works for minimum wage. No raise. No raise in sight, either.
The only way that she'll get a raise is when the minimum wage is raised again, and she'll get swept along with all of those other people making minimum wage.
Eventually, if it gets high enough, I'll be making minimum wage, too. That may take a while, but since the company that I work for does not give raises, it can happen.