Get rid of "free" public education. The U.S. did well without it during the formative years. Government funded schools were founded to produce an uniform "product" for business to use. Government funded "education" has turned into an expensive, bureaucratically top-heavy sinecure for second-raters (aka administrators and teachers).
I can hear the howls from here. "What about the poor ("disadvantaged") children -- sob, sniffle?" What about them? They can be busboys and drywall hangers. We don't need to import them from Mexico.
If YOU have kids, it is up to YOU to feed and educate them, not everyone else. Why should others pay to raise YOUR spawn?