RealClearPolitics has an article about the federal government getting involved in funding child care. The article basically is a warning to existing child care facilities and parents about the downsides of federal support. It focuses on mandates of various sorts that doctors and schools have faced.
One thing the article doesn't mention is who the government would hire if it opened its own child care centers or would demand centers which accepted government funds hire. Do you remember the Post Office employees caricatured in the second Men in Black film? I wish that were a total exaggeration, it isn't.
I'm sure Democrats have figured out that the logical day care hires are welfare mothers. They could bring their kids with them to work and thus be employed instead of staying home drawing ADC. The downside, strung-out addicts and other people of dubious character raising your children. Their children turn out badly now, and soon they'll be raising your kids too.