I have changed the practice area from "State & Local" government to something more appropriate.

This is not a HIPAA violation, which would be for medical information. This sounds like normal procedure for a currency exchange.

How to cash my sons stimulus check?

You can cash checks at currency exchanges, some grocery stores, or even Walmart.

What constitutes a threat?

I never assume I have all the details. This site is designed to help people with real legal issues and not hypotheticals. If you have been...

How do I know when a will is filed?

I have changed the practice area from "Banking" to something more appropriate. You can check with the court clerk to see if it has been filed.

What can a person do when someone takes their mail

You could try the Postal Inspector, although I don't think you would have much more luck. You might consider a video doorbell or a PO box.

Can i file for a stimulus check on behalf of my brother ?

Perhaps if you have a power of attorney. Check with the IRS regarding their requirements.

I have changed the practice area from "Tax" to something more appropriate.

Illinois doesn't allow bounty hunters or bail bondsmen.

I have changed the practice area from "Energy & Utilities" to something more appropriate.