I am not suggesting specifically targeting better transport and childcare options to poor single mothers - these are things that benefit everyone.
I once mulled over taking the bus to work for a couple of months to help save some money to pay back a student loan. I went to the website for Houston's transit authority and it was literally not possible for me to use public transport to get from my house in the suburbs to my 9-to-5 job in town. For me, it was an inconvenience - I had a car anyway and just had to find other ways to cut back. But for someone who can't afford a car, how is that person supposed to get a job? If she can't get back until 8pm because the bus only runs two trips a day and she has to leave her kids at daycare longer, that's eating up whatever meager wages she's getting. If she gets fired because she was told to work an early morning shift and had to say no because there are no buses at that hour, what do you expect her to do then?
1) This is another good example of why single motherhood is a scourge on America. A couple has more options.
DC, this article might help you understand why a poor, uneducated woman has nothing to gain from staying with the poor, uneducated man who dumped his little swimmers in her one night.
You might be interested to hear that
Houston is in the process of maybe totally rehauling its bus system to be far, far more useful without costing a cent more. I don't actually know what the public comment period is over there but it may still be going on, and good words from someone like you who might conceivably be convinced to use the bus system if it was better might be useful.