Yes, please. May I add an important one, which I forgot, and that concerns child support?
If the parent removed has been ordered to pay child support, the United States Marshals Service provides subsistence to the relocated witness. If child support is also ordered back home, or to wherever the wife and children live, then the marshals service will provide the child support.
In other words, this will not be deducted from the subsistence. The child support will be provided, in addition to that to the family, so the family does not suffer as a result of the relocation.