How does one volunteer to be a guardian of children whose parents get deported?

[calikid]

5. My wife and I have signed power of Attorney

from the parents of a young man that works for us. We also have POA on his two younger siblings.
ICE has been in the area and taken whole families away, as well as green carded people.
The ironic part to this whole mess is that the local republican farmers are rather upset that their workers aren't showing up, they are having problems keeping their operations going smoothly.