Is this legal? I feel his was coerced into changing this will. Since then he has had his bank accounts wiped out and was neglected by my sister. He ended up in the hospital, very ill, had to have surgery, etc. Now he is with another sister who is caring for him as he should be cared for. How do we legally get back control of his finances and health care issues?
Carol
The easiest way to get "back control" of his finances and health care issues is to start to care for him yourself and help with managing his finances for his daily care, including contributing your own cash to support him. Please don't use Alzheimer's as an excuse to gain control without the responsibility.
If he is in the care of your sister, what's to preclude him from re-changing the POA? If he was okay a few months ago, he's probably okay now.
If he wasn't okay a few months ago, it's easy to argue he's not okay now.
If his capacity is going to be contested by anyone - it can be - it will drain whatever assets he has, think lawyers and un-ending billable hours, capacity examinations by neurologists, court-appointed physician to make an evaluation, civil court case, depositions, discovery (gathering of documents), arbitration meetings, etc.
Alternatively, your sister caring for him now could apply to be his conservator (legal guardian for adults).