No need to go through the useless UN to get what they want. Mexico could send troops to the US border to stop anyone from crossing. If families don’t cross, they won’t be separated by the US government.
Most families could be stopped at the southern border of Mexico or directed to one of the locations inside Mexico where they can apply for US asylum.
And Mexico could grant asylum to anyone from further south who has a legit claim.
Unless they’ve implemented at least a couple of ideas they can control, I’m going to assume they don’t really give a Schiff about the families and are just doing their part in the invasion of the US.
Mexico gives out 15 day visas so they can claim that the migrants from outsice of Mexico are in their country legally. It’s all horrible.