The U.S. Constitution addresses infrastructure, a limited government environment in which businesses can thrive etc. but it doesn't address things like health and education and safety nets, because there would be too many differences of opinion about just how those things should be done, so it leaves it to the states, or to the people, free to address those things privately, with things like private charities.
This is what I find totally odd. The staunchest xians are more often than not the least compassionate, bordering on psychopathy. Totally void of empathy or anything that they shout out loud as being the attributes of their so called Religion of Piece(tm).
In my country a child falling seriously ill cannot ruin a family - for me that is more in the lines of compassion than your advocating dog-eat-dog world.