Yes you will need a lawyer who may be able to help you preserve your freedom and your driving privileges.

Yours does not seem to be a legal question for the lawyers on this board.

Your father would have to grant you power of attorney but, if he has dementia, he may not have the requisite mental capacity to do so any longer. ...

In my opinion you should reach out to your US congressperson for assistance. A congressional inquiry often gets their attention and results.

Not a conflict of interest in my opinion.

If you sustained injuries requiring medical care then reach out to a local personal injury lawyer right away.

Technically probably illegal but the police would not get involved in such a dispute. Just go to ssa.gov and get a replacement card.

This is a duplicate question. See the prior responses.

It means pretty much what it says. They are processing the claim albeit slowly.

At least in the state where I practice, no special license nor endorsement was required to drive a class a motor coach.