But then you lapse into the greedy, evil Republican caricature. It's very difficult to sustain a discussion with you.
In your simplistic example, the kid born in Harlem could be covered by his Mom's health insurance or, if she has none, he could be eligible for SCHIP or Medicaid. Moreover, why is he the product of a single parent household? Did the Mom choose to have a baby out of wedlock? Did she have the baby knowing that it would be a struggle to support him financially? What responsibility does the kid's parents have for raising and taking care of him? Where's the personal accountability? Now, if he really is the result of an unfortunate set of circumstances, there are protections built into the system. But the majority of single family household aren't the result of bad luck. A conscious set of decisions led to the situation.
Let's also look at the kid born in Boca Raton. His family was probably successful due to hard work, not for ill-gotten gains. And our tax code is already extremely progressive. Why should they be penalized for success? You libs want not just equal opportunity but equal results. In doing so, you get it bass ackwards -- rewarding failure and penalizing success.