Can a POA prevent siblings from seeing their dying parents?

I am the caregiver for my dad with POA. He told me while he was still able that he does not want his sister to come at all so part of my job it to keep her away. I am not saying it’s the same situation. Just what I have experienced.

My YB, as POA has chosen to be VERY controlling over who can visit mother and when. IDK why. He has a lot of issues about control and what she can and cannot do.

He has zero rights to keep us from her, yet he still does. We have talked to mom and she says it's just easier to let him have his way. So we don't fight him. He does not like to have mother have visitors when he is not home (or asleep) so we respect that.

As it is, none of us sibs are involved in mom's life, as per HER choice now. YB has control issues with mom and he is 'paying her back' for what he felt was a very subpar childhood. She was very neglectful as a mother---but we all grew up and realized it wasn't healthy or normal and let it go. YB is definitely abusing his role. Mom can make her own decisions, but always runs everything past YB before she acts. I think she thinks POA means he's the boss of her.

Kimberlidion, we need more information please. Are the parents living at home or in a senior facility? Are the parents on hospice? If, not what are their health issues, such as is dementia involved? Is the Power of Attorney also the one and only caregiver of the parents?

Not really, unless its felt that someone causes a parent stress or anxiety. IMO its a power thing. Are the parents cognitive? Are they capable of making decisions? If so, the POA cannot override their wishes. If Mom/Dad want to see their children they can see their children.