Will you agree that an international law regarding parents who dump their 15-19 Yo kids should be created?

I’ve come across many issue where parents kick their kids out of their house, refuse to pay for their livings, education, etc since their kids are either pregnant on early age, LGBT, drug-addicted, etc and these kind of parents are too depending on their own ideology/belief to be able to listen to the truth of their situation and accept their kids the way they are.

The victims are usually left stranded and homeless with no modal to face the roughness of the world, some are, however, lucky enough to find someone to support them.

Now we might live in different countries with different laws and regulations where in some places it’s legal for parents to dump their ‘legally mature’ (15/19+) kids for personal reasons but don’t you think there should be a mandatory international law that obligate parents to sustain their kids until their late 20s or until they’re capable enough to live on their own? What would be the best consequence for parents who violate this law?