Marriage Divorce Children

marriage divorce children
how can a marriage or divorce be valid in USA for illegal couples?

If a couple is married in califorina and they are illegal to be in the united states is the marriage and divorce valid ? And why are the able use our courts for divorce and child support and able to sue with ins not notified?

All that matters is that the marriage or divorce is legal when it took place and where it took place.

Marriage and divorce are CIVIL matters, not criminal.