Can a nursing home make the adult child who signed the parent in because the parent was unable to sign, the responsible party to pay the bill?

If you signed as POA, then you have no responsibility with paying for the nursing home bill.

Do you have a feeling that your Mother won't have enough money to pay the monthly bill? If yes, then have her apply for Medicaid [which is different from Medicare] and get that ball rolling, so that when Mom can't pay, Medicaid will pay the bills. Make sure the nursing home accepts Medicaid patients.

I signed in as POA and the NH has a copy in their file. I am in Texas and it is my understanding that Texas does not have filial laws. Thank you for your response.

Enter "Filial Responsibility State Laws" on the internet. You will find a listing of states which have them and more info on understanding the laws. Of course, you could see an elder law/care attorney if the law is unclear. Between 20-30 states have such laws and each is written differently. What applies in one state does not necessarily apply to your state. It was confusing to me and written laws can be changed over time. This is something you will need to stay on top of.
silkstitcher

Java did you sign as an individual or as POA for your mom? I would first try to get this corrected with the facility. Never sign individually, only as POA for the resident. Some states have filial responsibility laws. If you are not able to get this addressed with the facility you will very likely need to get an elder law attorney involved.