Maybe he should of just followed the policy that was working, but then he'd have to admit Trump was right, once again
I didn't approve of Herr Miller abusing children to apply a negative consequence to parents, but Legally once the kids are here, they aren't going anywhere but to a US placement, so the only option is to not allow any parent with a child, or undocumented child, into the country until they are found eligible to immigration or amnesty status.
Biden wants to do something more "humane." While what Trump did was inhumane, we shouldn't have to allow people to break reasonable laws because of notions of humanity. Just don't let em in. Then it's there choice. We might have to send some money to mexico, but then they can enforce their own southern border.