One of my favorite acts of the Bush administration was the Healthy Marriage Initiative. This is a small program by federal standards - about $100 million. The money went out as grants to states, and the states did various things with it.
My idea: provide a mass wedding for couples with children who plan to marry "someday." I still think this is the biggest bang for the buck that we could get in the short run.
The Obama administration plans to cut out the whole program. I don't think, as Robert Rector of the Heritage Foundation does, that they are doing this because "The statist Left is not content to merely watch marriage die; it seeks to nail the coffin lid tightly shut." I think they just see it as one way to save money in a recession.
Nonetheless, promoting marriage is the most effective thing the government could do to reduce the number of children who grow up poor. Cutting the Healthy Marriage Initiative is penny-wise, but pound-foolish.