Medi-Cal covers lots of kids in California. Lots of them are the children of illegal immigrants, but what are you gonna do? If they're not going to enforce the border laws there is no realistic (politically viable) choice but to help take care of these kids.
Illegal immigration in California has been a disaster from what I have witnessed in my lifetime. Why has it been allowed to continue? Business profits from the 3rd world labor, gov't gets lots of new customers for services and jails, liberals get the warm fuzzies, and existing minorities feel more at home.
On the down side, the economy fails to evolove as capitalists exploit cheap unskilled labor rather than investing in higher tech enterprises, labor market is flooded and wages depressed, social services are overwhelmed, crime and blight flourish, and taxes on legal workers and homeowners go up to pay for it all.
Working class gets the short end of the stick again.