He has not fulfilled the promises he was re-elected for. He has been a rubber stamp for Obama. From bills ranging from immigration to the national debt, he has rolled over. Coasting to retirement, he is the archetypal symbol of why we need to get rid of career politicians.
Most of these families cannot afford more than peanut butter, baloney, or nothing at all. These children are malnourished in either case, and their intellectual and physical development suffers as a result. These families have already been vetted for free school lunches and deserve better at no fault of their "working poor" parents. It will more likely cost taxpayers fractions of pennies to help these kids grow up healthy and smart, resulting in themselves achieving a higher tax bracket and earning a larger income than they would otherwise.