Not common in TX for sure. Don't know a doctor or hospital that would even consider this. Also even with terminal dying person, always have IV fluids continually until death. Do these hospice places not have ethics committees? Also are they accredited by the states, anyone know?
Here's an independent advocacy group (volunteers) trying to preserve the original purpose of hospices. There's information on this page about "Hospice Standards of Care".
http://www.hospicepatients.org/maintopics.html