I posted this before in another thread. In order to answer the OP, we need to know who earns minimum wage. I can’t find any recent stats.
You can currently get by on minimum wage if you can find enough work (>$25k at 70h/week and 50 weeks/year). I don’t think you can do that on 1/2 minimum wage without public assistance. However, it appears that very few people out there are supporting themselves on just one (federal) minimum wage income.